Home / 413,042.97-619,601.31-128,735.91

Finding the Fourth Proportional to 413,042.97, 619,601.31 and 128,735.91

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Solution

The fourth proportional to 413,042.97, 619,601.31 and 128,735.91 is: 193,115.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,042.97 : 619,601.31 = 128,735.91 : x
  2. Step 2: Convert to fraction form
    413,042.97/619,601.31 = 128,735.91/x
  3. Step 3: Cross multiply
    413,042.97x = 619,601.31 × 128,735.91
  4. Step 4: Simplify right side
    413,042.97x = 79,764,938,480.04
  5. Step 5: Solve for x
    x = 79,764,938,480.04/413,042.97
  6. Step 6: Final answer
    x = 193,115.35

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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.