Home / 521,254.20-718,959.90-478,372.20

Finding the Fourth Proportional to 521,254.20, 718,959.90 and 478,372.20

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Solution

The fourth proportional to 521,254.20, 718,959.90 and 478,372.20 is: 659,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,254.20 : 718,959.90 = 478,372.20 : x
  2. Step 2: Convert to fraction form
    521,254.20/718,959.90 = 478,372.20/x
  3. Step 3: Cross multiply
    521,254.20x = 718,959.90 × 478,372.20
  4. Step 4: Simplify right side
    521,254.20x = 343,930,432,216.73
  5. Step 5: Solve for x
    x = 343,930,432,216.73/521,254.20
  6. Step 6: Final answer
    x = 659,813.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.