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Finding the Fourth Proportional to 906,604.16, 1,359,721.92 and 861,641.60

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Solution

The fourth proportional to 906,604.16, 1,359,721.92 and 861,641.60 is: 1,292,287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,604.16 : 1,359,721.92 = 861,641.60 : x
  2. Step 2: Convert to fraction form
    906,604.16/1,359,721.92 = 861,641.60/x
  3. Step 3: Cross multiply
    906,604.16x = 1,359,721.92 × 861,641.60
  4. Step 4: Simplify right side
    906,604.16x = 1,171,592,970,703.87
  5. Step 5: Solve for x
    x = 1,171,592,970,703.87/906,604.16
  6. Step 6: Final answer
    x = 1,292,287.22

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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.