Home / 521,785.20-782,240.40-272,467.20

Finding the Fourth Proportional to 521,785.20, 782,240.40 and 272,467.20

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Solution

The fourth proportional to 521,785.20, 782,240.40 and 272,467.20 is: 408,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,785.20 : 782,240.40 = 272,467.20 : x
  2. Step 2: Convert to fraction form
    521,785.20/782,240.40 = 272,467.20/x
  3. Step 3: Cross multiply
    521,785.20x = 782,240.40 × 272,467.20
  4. Step 4: Simplify right side
    521,785.20x = 213,134,851,514.88
  5. Step 5: Solve for x
    x = 213,134,851,514.88/521,785.20
  6. Step 6: Final answer
    x = 408,472.40

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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.