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Finding the Fourth Proportional to 653,980, 979,546.02 and 316,308.42

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Solution

The fourth proportional to 653,980, 979,546.02 and 316,308.42 is: 473,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,980 : 979,546.02 = 316,308.42 : x
  2. Step 2: Convert to fraction form
    653,980/979,546.02 = 316,308.42/x
  3. Step 3: Cross multiply
    653,980x = 979,546.02 × 316,308.42
  4. Step 4: Simplify right side
    653,980x = 309,838,653,903.49
  5. Step 5: Solve for x
    x = 309,838,653,903.49/653,980
  6. Step 6: Final answer
    x = 473,773.90

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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.