Home / 426,267.30-639,432.34-122,649.13

Finding the Fourth Proportional to 426,267.30, 639,432.34 and 122,649.13

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Solution

The fourth proportional to 426,267.30, 639,432.34 and 122,649.13 is: 183,982.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,267.30 : 639,432.34 = 122,649.13 : x
  2. Step 2: Convert to fraction form
    426,267.30/639,432.34 = 122,649.13/x
  3. Step 3: Cross multiply
    426,267.30x = 639,432.34 × 122,649.13
  4. Step 4: Simplify right side
    426,267.30x = 78,425,818,289.66
  5. Step 5: Solve for x
    x = 78,425,818,289.66/426,267.30
  6. Step 6: Final answer
    x = 183,982.72

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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.