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Finding the Fourth Proportional to 521,504.30, 781,272.30 and 486,074.90

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Solution

The fourth proportional to 521,504.30, 781,272.30 and 486,074.90 is: 728,195.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,504.30 : 781,272.30 = 486,074.90 : x
  2. Step 2: Convert to fraction form
    521,504.30/781,272.30 = 486,074.90/x
  3. Step 3: Cross multiply
    521,504.30x = 781,272.30 × 486,074.90
  4. Step 4: Simplify right side
    521,504.30x = 379,756,855,095.27
  5. Step 5: Solve for x
    x = 379,756,855,095.27/521,504.30
  6. Step 6: Final answer
    x = 728,195.06

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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.