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Finding the Fourth Proportional to 865,630.87, 1,304,354.86 and 711,316.15

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Solution

The fourth proportional to 865,630.87, 1,304,354.86 and 711,316.15 is: 1,071,829.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,630.87 : 1,304,354.86 = 711,316.15 : x
  2. Step 2: Convert to fraction form
    865,630.87/1,304,354.86 = 711,316.15/x
  3. Step 3: Cross multiply
    865,630.87x = 1,304,354.86 × 711,316.15
  4. Step 4: Simplify right side
    865,630.87x = 927,808,676,210.97
  5. Step 5: Solve for x
    x = 927,808,676,210.97/865,630.87
  6. Step 6: Final answer
    x = 1,071,829.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.