Home / 724,880.80-1,087,321.20-472,938.40

Finding the Fourth Proportional to 724,880.80, 1,087,321.20 and 472,938.40

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Solution

The fourth proportional to 724,880.80, 1,087,321.20 and 472,938.40 is: 709,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,880.80 : 1,087,321.20 = 472,938.40 : x
  2. Step 2: Convert to fraction form
    724,880.80/1,087,321.20 = 472,938.40/x
  3. Step 3: Cross multiply
    724,880.80x = 1,087,321.20 × 472,938.40
  4. Step 4: Simplify right side
    724,880.80x = 514,235,948,614.08
  5. Step 5: Solve for x
    x = 514,235,948,614.08/724,880.80
  6. Step 6: Final answer
    x = 709,407.60

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Double scale
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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.