Home / 656,665.22-906,158.95-381,001.72

Finding the Fourth Proportional to 656,665.22, 906,158.95 and 381,001.72

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Solution

The fourth proportional to 656,665.22, 906,158.95 and 381,001.72 is: 525,759.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,665.22 : 906,158.95 = 381,001.72 : x
  2. Step 2: Convert to fraction form
    656,665.22/906,158.95 = 381,001.72/x
  3. Step 3: Cross multiply
    656,665.22x = 906,158.95 × 381,001.72
  4. Step 4: Simplify right side
    656,665.22x = 345,248,119,167.68
  5. Step 5: Solve for x
    x = 345,248,119,167.68/656,665.22
  6. Step 6: Final answer
    x = 525,759.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.