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Finding the Fourth Proportional to 656,791.52, 906,371.82 and 354,985.52

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Solution

The fourth proportional to 656,791.52, 906,371.82 and 354,985.52 is: 489,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,791.52 : 906,371.82 = 354,985.52 : x
  2. Step 2: Convert to fraction form
    656,791.52/906,371.82 = 354,985.52/x
  3. Step 3: Cross multiply
    656,791.52x = 906,371.82 × 354,985.52
  4. Step 4: Simplify right side
    656,791.52x = 321,748,867,304.19
  5. Step 5: Solve for x
    x = 321,748,867,304.19/656,791.52
  6. Step 6: Final answer
    x = 489,879.76

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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.