Home / 681,665.60-1,022,498.40-429,723.20

Finding the Fourth Proportional to 681,665.60, 1,022,498.40 and 429,723.20

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Solution

The fourth proportional to 681,665.60, 1,022,498.40 and 429,723.20 is: 644,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,665.60 : 1,022,498.40 = 429,723.20 : x
  2. Step 2: Convert to fraction form
    681,665.60/1,022,498.40 = 429,723.20/x
  3. Step 3: Cross multiply
    681,665.60x = 1,022,498.40 × 429,723.20
  4. Step 4: Simplify right side
    681,665.60x = 439,391,284,442.88
  5. Step 5: Solve for x
    x = 439,391,284,442.88/681,665.60
  6. Step 6: Final answer
    x = 644,584.80

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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.