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Finding the Fourth Proportional to 521,723.20, 782,584.80 and 514,724.80

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Solution

The fourth proportional to 521,723.20, 782,584.80 and 514,724.80 is: 772,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,723.20 : 782,584.80 = 514,724.80 : x
  2. Step 2: Convert to fraction form
    521,723.20/782,584.80 = 514,724.80/x
  3. Step 3: Cross multiply
    521,723.20x = 782,584.80 × 514,724.80
  4. Step 4: Simplify right side
    521,723.20x = 402,815,804,663.04
  5. Step 5: Solve for x
    x = 402,815,804,663.04/521,723.20
  6. Step 6: Final answer
    x = 772,087.20

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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.