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Finding the Fourth Proportional to 652,221.30, 978,331.95 and 628,601.70

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Solution

The fourth proportional to 652,221.30, 978,331.95 and 628,601.70 is: 942,902.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,221.30 : 978,331.95 = 628,601.70 : x
  2. Step 2: Convert to fraction form
    652,221.30/978,331.95 = 628,601.70/x
  3. Step 3: Cross multiply
    652,221.30x = 978,331.95 × 628,601.70
  4. Step 4: Simplify right side
    652,221.30x = 614,981,126,934.32
  5. Step 5: Solve for x
    x = 614,981,126,934.32/652,221.30
  6. Step 6: Final answer
    x = 942,902.55

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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.