Home / 804,963.85-1,207,445.78-431,715.85

Finding the Fourth Proportional to 804,963.85, 1,207,445.78 and 431,715.85

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Solution

The fourth proportional to 804,963.85, 1,207,445.78 and 431,715.85 is: 647,573.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,963.85 : 1,207,445.78 = 431,715.85 : x
  2. Step 2: Convert to fraction form
    804,963.85/1,207,445.78 = 431,715.85/x
  3. Step 3: Cross multiply
    804,963.85x = 1,207,445.78 × 431,715.85
  4. Step 4: Simplify right side
    804,963.85x = 521,273,481,241.61
  5. Step 5: Solve for x
    x = 521,273,481,241.61/804,963.85
  6. Step 6: Final answer
    x = 647,573.78

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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.