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Finding the Fourth Proportional to 724,175.33, 999,130.77 and 418,211.30

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Solution

The fourth proportional to 724,175.33, 999,130.77 and 418,211.30 is: 576,998.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,175.33 : 999,130.77 = 418,211.30 : x
  2. Step 2: Convert to fraction form
    724,175.33/999,130.77 = 418,211.30/x
  3. Step 3: Cross multiply
    724,175.33x = 999,130.77 × 418,211.30
  4. Step 4: Simplify right side
    724,175.33x = 417,847,780,689.53
  5. Step 5: Solve for x
    x = 417,847,780,689.53/724,175.33
  6. Step 6: Final answer
    x = 576,998.09

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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.