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Finding the Fourth Proportional to 865,646.76, 1,295,222.43 and 715,957.56

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Solution

The fourth proportional to 865,646.76, 1,295,222.43 and 715,957.56 is: 1,071,250.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,646.76 : 1,295,222.43 = 715,957.56 : x
  2. Step 2: Convert to fraction form
    865,646.76/1,295,222.43 = 715,957.56/x
  3. Step 3: Cross multiply
    865,646.76x = 1,295,222.43 × 715,957.56
  4. Step 4: Simplify right side
    865,646.76x = 927,324,290,640.07
  5. Step 5: Solve for x
    x = 927,324,290,640.07/865,646.76
  6. Step 6: Final answer
    x = 1,071,250.23

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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.