Home / 521,736.40-782,478.60-217,966.39

Finding the Fourth Proportional to 521,736.40, 782,478.60 and 217,966.39

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Solution

The fourth proportional to 521,736.40, 782,478.60 and 217,966.39 is: 326,896.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,736.40 : 782,478.60 = 217,966.39 : x
  2. Step 2: Convert to fraction form
    521,736.40/782,478.60 = 217,966.39/x
  3. Step 3: Cross multiply
    521,736.40x = 782,478.60 × 217,966.39
  4. Step 4: Simplify right side
    521,736.40x = 170,554,035,694.25
  5. Step 5: Solve for x
    x = 170,554,035,694.25/521,736.40
  6. Step 6: Final answer
    x = 326,896.95

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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.