Home / 804,927.45-1,207,391.18-431,679.45

Finding the Fourth Proportional to 804,927.45, 1,207,391.18 and 431,679.45

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Solution

The fourth proportional to 804,927.45, 1,207,391.18 and 431,679.45 is: 647,519.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,927.45 : 1,207,391.18 = 431,679.45 : x
  2. Step 2: Convert to fraction form
    804,927.45/1,207,391.18 = 431,679.45/x
  3. Step 3: Cross multiply
    804,927.45x = 1,207,391.18 × 431,679.45
  4. Step 4: Simplify right side
    804,927.45x = 521,205,958,358.85
  5. Step 5: Solve for x
    x = 521,205,958,358.85/804,927.45
  6. Step 6: Final answer
    x = 647,519.18

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Half scale
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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.