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Finding the Fourth Proportional to 521,251.50, 780,603.99 and 321,296.83

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Solution

The fourth proportional to 521,251.50, 780,603.99 and 321,296.83 is: 481,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,251.50 : 780,603.99 = 321,296.83 : x
  2. Step 2: Convert to fraction form
    521,251.50/780,603.99 = 321,296.83/x
  3. Step 3: Cross multiply
    521,251.50x = 780,603.99 × 321,296.83
  4. Step 4: Simplify right side
    521,251.50x = 250,805,584,315.98
  5. Step 5: Solve for x
    x = 250,805,584,315.98/521,251.50
  6. Step 6: Final answer
    x = 481,160.40

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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.