Home / 521,857.30-782,117.02-454,107.80

Finding the Fourth Proportional to 521,857.30, 782,117.02 and 454,107.80

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Solution

The fourth proportional to 521,857.30, 782,117.02 and 454,107.80 is: 680,579.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,857.30 : 782,117.02 = 454,107.80 : x
  2. Step 2: Convert to fraction form
    521,857.30/782,117.02 = 454,107.80/x
  3. Step 3: Cross multiply
    521,857.30x = 782,117.02 × 454,107.80
  4. Step 4: Simplify right side
    521,857.30x = 355,165,439,294.76
  5. Step 5: Solve for x
    x = 355,165,439,294.76/521,857.30
  6. Step 6: Final answer
    x = 680,579.61

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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.