Home / 426,118.17-639,264.73-126,572.07

Finding the Fourth Proportional to 426,118.17, 639,264.73 and 126,572.07

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Solution

The fourth proportional to 426,118.17, 639,264.73 and 126,572.07 is: 189,884.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,118.17 : 639,264.73 = 126,572.07 : x
  2. Step 2: Convert to fraction form
    426,118.17/639,264.73 = 126,572.07/x
  3. Step 3: Cross multiply
    426,118.17x = 639,264.73 × 126,572.07
  4. Step 4: Simplify right side
    426,118.17x = 80,913,059,837.66
  5. Step 5: Solve for x
    x = 80,913,059,837.66/426,118.17
  6. Step 6: Final answer
    x = 189,884.09

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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.