Home / 687,235.19-948,351.78-381,308.04

Finding the Fourth Proportional to 687,235.19, 948,351.78 and 381,308.04

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Solution

The fourth proportional to 687,235.19, 948,351.78 and 381,308.04 is: 526,186.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,235.19 : 948,351.78 = 381,308.04 : x
  2. Step 2: Convert to fraction form
    687,235.19/948,351.78 = 381,308.04/x
  3. Step 3: Cross multiply
    687,235.19x = 948,351.78 × 381,308.04
  4. Step 4: Simplify right side
    687,235.19x = 361,614,158,462.31
  5. Step 5: Solve for x
    x = 361,614,158,462.31/687,235.19
  6. Step 6: Final answer
    x = 526,186.91

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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.