Home / 426,550.74-639,317.12-198,539.52

Finding the Fourth Proportional to 426,550.74, 639,317.12 and 198,539.52

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Solution

The fourth proportional to 426,550.74, 639,317.12 and 198,539.52 is: 297,572.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,550.74 : 639,317.12 = 198,539.52 : x
  2. Step 2: Convert to fraction form
    426,550.74/639,317.12 = 198,539.52/x
  3. Step 3: Cross multiply
    426,550.74x = 639,317.12 × 198,539.52
  4. Step 4: Simplify right side
    426,550.74x = 126,929,714,132.58
  5. Step 5: Solve for x
    x = 126,929,714,132.58/426,550.74
  6. Step 6: Final answer
    x = 297,572.37

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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.