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Finding the Fourth Proportional to 679,308.71, 935,825.78 and 474,977.30

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Solution

The fourth proportional to 679,308.71, 935,825.78 and 474,977.30 is: 654,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,308.71 : 935,825.78 = 474,977.30 : x
  2. Step 2: Convert to fraction form
    679,308.71/935,825.78 = 474,977.30/x
  3. Step 3: Cross multiply
    679,308.71x = 935,825.78 × 474,977.30
  4. Step 4: Simplify right side
    679,308.71x = 444,495,998,763.11
  5. Step 5: Solve for x
    x = 444,495,998,763.11/679,308.71
  6. Step 6: Final answer
    x = 654,335.79

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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.