Home / 912,919.40-1,369,379.10-238,999.40

Finding the Fourth Proportional to 912,919.40, 1,369,379.10 and 238,999.40

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Solution

The fourth proportional to 912,919.40, 1,369,379.10 and 238,999.40 is: 358,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,919.40 : 1,369,379.10 = 238,999.40 : x
  2. Step 2: Convert to fraction form
    912,919.40/1,369,379.10 = 238,999.40/x
  3. Step 3: Cross multiply
    912,919.40x = 1,369,379.10 × 238,999.40
  4. Step 4: Simplify right side
    912,919.40x = 327,280,783,272.54
  5. Step 5: Solve for x
    x = 327,280,783,272.54/912,919.40
  6. Step 6: Final answer
    x = 358,499.10

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Half scale
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Double scale
Find fourth proportional to 912,920.40, 1,369,380.60 and 239,000.40
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.