Home / 1,121,931,605.40-1,682,897,408.10-509,711,573.40

Finding the Fourth Proportional to 1,121,931,605.40, 1,682,897,408.10 and 509,711,573.40

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Solution

The fourth proportional to 1,121,931,605.40, 1,682,897,408.10 and 509,711,573.40 is: 764,567,360.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,931,605.40 : 1,682,897,408.10 = 509,711,573.40 : x
  2. Step 2: Convert to fraction form
    1,121,931,605.40/1,682,897,408.10 = 509,711,573.40/x
  3. Step 3: Cross multiply
    1,121,931,605.40x = 1,682,897,408.10 × 509,711,573.40
  4. Step 4: Simplify right side
    1,121,931,605.40x = 857,792,285,753,432,832
  5. Step 5: Solve for x
    x = 857,792,285,753,432,832/1,121,931,605.40
  6. Step 6: Final answer
    x = 764,567,360.10

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Half scale
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Double scale
Find fourth proportional to 1,121,931,606.40, 1,682,897,409.60 and 509,711,574.40
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.