Home / 687,044.70-948,127.37-381,141.14

Finding the Fourth Proportional to 687,044.70, 948,127.37 and 381,141.14

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Solution

The fourth proportional to 687,044.70, 948,127.37 and 381,141.14 is: 525,977.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,044.70 : 948,127.37 = 381,141.14 : x
  2. Step 2: Convert to fraction form
    687,044.70/948,127.37 = 381,141.14/x
  3. Step 3: Cross multiply
    687,044.70x = 948,127.37 × 381,141.14
  4. Step 4: Simplify right side
    687,044.70x = 361,370,340,020.66
  5. Step 5: Solve for x
    x = 361,370,340,020.66/687,044.70
  6. Step 6: Final answer
    x = 525,977.92

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Double scale
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Similar ratio
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1.5x scale

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.