Home / 426,377.08-639,454.20-126,776.98

Finding the Fourth Proportional to 426,377.08, 639,454.20 and 126,776.98

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Solution

The fourth proportional to 426,377.08, 639,454.20 and 126,776.98 is: 190,132.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,377.08 : 639,454.20 = 126,776.98 : x
  2. Step 2: Convert to fraction form
    426,377.08/639,454.20 = 126,776.98/x
  3. Step 3: Cross multiply
    426,377.08x = 639,454.20 × 126,776.98
  4. Step 4: Simplify right side
    426,377.08x = 81,068,072,324.32
  5. Step 5: Solve for x
    x = 81,068,072,324.32/426,377.08
  6. Step 6: Final answer
    x = 190,132.34

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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.