Home / 724,279.83-999,629.85-418,301.21

Finding the Fourth Proportional to 724,279.83, 999,629.85 and 418,301.21

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Solution

The fourth proportional to 724,279.83, 999,629.85 and 418,301.21 is: 577,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,279.83 : 999,629.85 = 418,301.21 : x
  2. Step 2: Convert to fraction form
    724,279.83/999,629.85 = 418,301.21/x
  3. Step 3: Cross multiply
    724,279.83x = 999,629.85 × 418,301.21
  4. Step 4: Simplify right side
    724,279.83x = 418,146,375,807.12
  5. Step 5: Solve for x
    x = 418,146,375,807.12/724,279.83
  6. Step 6: Final answer
    x = 577,327.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.