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Finding the Fourth Proportional to 605,617.80, 908,426.70 and 487,519.80

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Solution

The fourth proportional to 605,617.80, 908,426.70 and 487,519.80 is: 731,279.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,617.80 : 908,426.70 = 487,519.80 : x
  2. Step 2: Convert to fraction form
    605,617.80/908,426.70 = 487,519.80/x
  3. Step 3: Cross multiply
    605,617.80x = 908,426.70 × 487,519.80
  4. Step 4: Simplify right side
    605,617.80x = 442,876,003,098.66
  5. Step 5: Solve for x
    x = 442,876,003,098.66/605,617.80
  6. Step 6: Final answer
    x = 731,279.70

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Double scale
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Similar ratio
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1.5x scale

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.