Home / 426,772.20-639,575.10-284,212.20

Finding the Fourth Proportional to 426,772.20, 639,575.10 and 284,212.20

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Solution

The fourth proportional to 426,772.20, 639,575.10 and 284,212.20 is: 425,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,772.20 : 639,575.10 = 284,212.20 : x
  2. Step 2: Convert to fraction form
    426,772.20/639,575.10 = 284,212.20/x
  3. Step 3: Cross multiply
    426,772.20x = 639,575.10 × 284,212.20
  4. Step 4: Simplify right side
    426,772.20x = 181,775,046,236.22
  5. Step 5: Solve for x
    x = 181,775,046,236.22/426,772.20
  6. Step 6: Final answer
    x = 425,929.91

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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.