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Finding the Fourth Proportional to 870,740.73, 1,305,608.19 and 337,638.96

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Solution

The fourth proportional to 870,740.73, 1,305,608.19 and 337,638.96 is: 506,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,740.73 : 1,305,608.19 = 337,638.96 : x
  2. Step 2: Convert to fraction form
    870,740.73/1,305,608.19 = 337,638.96/x
  3. Step 3: Cross multiply
    870,740.73x = 1,305,608.19 × 337,638.96
  4. Step 4: Simplify right side
    870,740.73x = 440,824,191,439.08
  5. Step 5: Solve for x
    x = 440,824,191,439.08/870,740.73
  6. Step 6: Final answer
    x = 506,263.43

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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.