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Finding the Fourth Proportional to 870,402.56, 1,304,553.92 and 449,448.96

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Solution

The fourth proportional to 870,402.56, 1,304,553.92 and 449,448.96 is: 673,631.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,402.56 : 1,304,553.92 = 449,448.96 : x
  2. Step 2: Convert to fraction form
    870,402.56/1,304,553.92 = 449,448.96/x
  3. Step 3: Cross multiply
    870,402.56x = 1,304,553.92 × 449,448.96
  4. Step 4: Simplify right side
    870,402.56x = 586,330,402,607.92
  5. Step 5: Solve for x
    x = 586,330,402,607.92/870,402.56
  6. Step 6: Final answer
    x = 673,631.29

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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.