Home / 724,812.60-1,087,218.90-472,870.20

Finding the Fourth Proportional to 724,812.60, 1,087,218.90 and 472,870.20

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Solution

The fourth proportional to 724,812.60, 1,087,218.90 and 472,870.20 is: 709,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,812.60 : 1,087,218.90 = 472,870.20 : x
  2. Step 2: Convert to fraction form
    724,812.60/1,087,218.90 = 472,870.20/x
  3. Step 3: Cross multiply
    724,812.60x = 1,087,218.90 × 472,870.20
  4. Step 4: Simplify right side
    724,812.60x = 514,113,418,686.78
  5. Step 5: Solve for x
    x = 514,113,418,686.78/724,812.60
  6. Step 6: Final answer
    x = 709,305.30

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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.