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Finding the Fourth Proportional to 724,689.59, 999,847.35 and 418,654.29

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Solution

The fourth proportional to 724,689.59, 999,847.35 and 418,654.29 is: 577,613.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,689.59 : 999,847.35 = 418,654.29 : x
  2. Step 2: Convert to fraction form
    724,689.59/999,847.35 = 418,654.29/x
  3. Step 3: Cross multiply
    724,689.59x = 999,847.35 × 418,654.29
  4. Step 4: Simplify right side
    724,689.59x = 418,590,382,422.63
  5. Step 5: Solve for x
    x = 418,590,382,422.63/724,689.59
  6. Step 6: Final answer
    x = 577,613.35

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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.