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Finding the Fourth Proportional to 652,434.20, 978,651.30 and 587,115.80

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Solution

The fourth proportional to 652,434.20, 978,651.30 and 587,115.80 is: 880,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,434.20 : 978,651.30 = 587,115.80 : x
  2. Step 2: Convert to fraction form
    652,434.20/978,651.30 = 587,115.80/x
  3. Step 3: Cross multiply
    652,434.20x = 978,651.30 × 587,115.80
  4. Step 4: Simplify right side
    652,434.20x = 574,581,640,920.54
  5. Step 5: Solve for x
    x = 574,581,640,920.54/652,434.20
  6. Step 6: Final answer
    x = 880,673.70

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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.