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Finding the Fourth Proportional to 652,147.80, 978,221.70 and 547,171.80

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Solution

The fourth proportional to 652,147.80, 978,221.70 and 547,171.80 is: 820,757.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,147.80 : 978,221.70 = 547,171.80 : x
  2. Step 2: Convert to fraction form
    652,147.80/978,221.70 = 547,171.80/x
  3. Step 3: Cross multiply
    652,147.80x = 978,221.70 × 547,171.80
  4. Step 4: Simplify right side
    652,147.80x = 535,255,328,388.06
  5. Step 5: Solve for x
    x = 535,255,328,388.06/652,147.80
  6. Step 6: Final answer
    x = 820,757.70

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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.