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Finding the Fourth Proportional to 652,930.64, 979,560.68 and 316,132.64

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Solution

The fourth proportional to 652,930.64, 979,560.68 and 316,132.64 is: 474,278.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,930.64 : 979,560.68 = 316,132.64 : x
  2. Step 2: Convert to fraction form
    652,930.64/979,560.68 = 316,132.64/x
  3. Step 3: Cross multiply
    652,930.64x = 979,560.68 × 316,132.64
  4. Step 4: Simplify right side
    652,930.64x = 309,671,103,808.60
  5. Step 5: Solve for x
    x = 309,671,103,808.60/652,930.64
  6. Step 6: Final answer
    x = 474,278.71

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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.