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Finding the Fourth Proportional to 612,398.52, 845,138.72 and 340,470.88

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Solution

The fourth proportional to 612,398.52, 845,138.72 and 340,470.88 is: 469,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,398.52 : 845,138.72 = 340,470.88 : x
  2. Step 2: Convert to fraction form
    612,398.52/845,138.72 = 340,470.88/x
  3. Step 3: Cross multiply
    612,398.52x = 845,138.72 × 340,470.88
  4. Step 4: Simplify right side
    612,398.52x = 287,745,123,720.47
  5. Step 5: Solve for x
    x = 287,745,123,720.47/612,398.52
  6. Step 6: Final answer
    x = 469,865.81

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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.