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Finding the Fourth Proportional to 717,023.52, 989,456.40 and 394,761.60

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Solution

The fourth proportional to 717,023.52, 989,456.40 and 394,761.60 is: 544,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,023.52 : 989,456.40 = 394,761.60 : x
  2. Step 2: Convert to fraction form
    717,023.52/989,456.40 = 394,761.60/x
  3. Step 3: Cross multiply
    717,023.52x = 989,456.40 × 394,761.60
  4. Step 4: Simplify right side
    717,023.52x = 390,599,391,594.24
  5. Step 5: Solve for x
    x = 390,599,391,594.24/717,023.52
  6. Step 6: Final answer
    x = 544,751.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.