Home / 861,455.46-1,292,470.92-381,618.12

Finding the Fourth Proportional to 861,455.46, 1,292,470.92 and 381,618.12

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Solution

The fourth proportional to 861,455.46, 1,292,470.92 and 381,618.12 is: 572,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,455.46 : 1,292,470.92 = 381,618.12 : x
  2. Step 2: Convert to fraction form
    861,455.46/1,292,470.92 = 381,618.12/x
  3. Step 3: Cross multiply
    861,455.46x = 1,292,470.92 × 381,618.12
  4. Step 4: Simplify right side
    861,455.46x = 493,230,322,645.07
  5. Step 5: Solve for x
    x = 493,230,322,645.07/861,455.46
  6. Step 6: Final answer
    x = 572,554.64

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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.