Home / 687,187.92-948,287.20-381,261.04

Finding the Fourth Proportional to 687,187.92, 948,287.20 and 381,261.04

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Solution

The fourth proportional to 687,187.92, 948,287.20 and 381,261.04 is: 526,122.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,187.92 : 948,287.20 = 381,261.04 : x
  2. Step 2: Convert to fraction form
    687,187.92/948,287.20 = 381,261.04/x
  3. Step 3: Cross multiply
    687,187.92x = 948,287.20 × 381,261.04
  4. Step 4: Simplify right side
    687,187.92x = 361,544,964,090.69
  5. Step 5: Solve for x
    x = 361,544,964,090.69/687,187.92
  6. Step 6: Final answer
    x = 526,122.41

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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.