Home / 1,328,002,113.60-1,992,003,170.40-931,972,280.40

Finding the Fourth Proportional to 1,328,002,113.60, 1,992,003,170.40 and 931,972,280.40

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Solution

The fourth proportional to 1,328,002,113.60, 1,992,003,170.40 and 931,972,280.40 is: 1,397,958,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,002,113.60 : 1,992,003,170.40 = 931,972,280.40 : x
  2. Step 2: Convert to fraction form
    1,328,002,113.60/1,992,003,170.40 = 931,972,280.40/x
  3. Step 3: Cross multiply
    1,328,002,113.60x = 1,992,003,170.40 × 931,972,280.40
  4. Step 4: Simplify right side
    1,328,002,113.60x = 1,856,491,737,281,717,760
  5. Step 5: Solve for x
    x = 1,856,491,737,281,717,760/1,328,002,113.60
  6. Step 6: Final answer
    x = 1,397,958,420.60

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Half scale
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Double scale
Find fourth proportional to 1,328,002,114.60, 1,992,003,171.90 and 931,972,281.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.