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Finding the Fourth Proportional to 804,596.10, 1,206,894.15 and 431,348.10

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Solution

The fourth proportional to 804,596.10, 1,206,894.15 and 431,348.10 is: 647,022.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,596.10 : 1,206,894.15 = 431,348.10 : x
  2. Step 2: Convert to fraction form
    804,596.10/1,206,894.15 = 431,348.10/x
  3. Step 3: Cross multiply
    804,596.10x = 1,206,894.15 × 431,348.10
  4. Step 4: Simplify right side
    804,596.10x = 520,591,498,503.62
  5. Step 5: Solve for x
    x = 520,591,498,503.62/804,596.10
  6. Step 6: Final answer
    x = 647,022.15

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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.