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Finding the Fourth Proportional to 865,633.62, 1,304,359.02 and 711,318.90

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Solution

The fourth proportional to 865,633.62, 1,304,359.02 and 711,318.90 is: 1,071,833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,633.62 : 1,304,359.02 = 711,318.90 : x
  2. Step 2: Convert to fraction form
    865,633.62/1,304,359.02 = 711,318.90/x
  3. Step 3: Cross multiply
    865,633.62x = 1,304,359.02 × 711,318.90
  4. Step 4: Simplify right side
    865,633.62x = 927,815,219,754.88
  5. Step 5: Solve for x
    x = 927,815,219,754.88/865,633.62
  6. Step 6: Final answer
    x = 1,071,833.62

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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.