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Finding the Fourth Proportional to 617,949.80, 926,060.70 and 491,805.80

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Solution

The fourth proportional to 617,949.80, 926,060.70 and 491,805.80 is: 737,021.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,949.80 : 926,060.70 = 491,805.80 : x
  2. Step 2: Convert to fraction form
    617,949.80/926,060.70 = 491,805.80/x
  3. Step 3: Cross multiply
    617,949.80x = 926,060.70 × 491,805.80
  4. Step 4: Simplify right side
    617,949.80x = 455,442,023,412.06
  5. Step 5: Solve for x
    x = 455,442,023,412.06/617,949.80
  6. Step 6: Final answer
    x = 737,021.07

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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.