Home / 687,672.06-948,972.42-381,730.56

Finding the Fourth Proportional to 687,672.06, 948,972.42 and 381,730.56

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Solution

The fourth proportional to 687,672.06, 948,972.42 and 381,730.56 is: 526,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,672.06 : 948,972.42 = 381,730.56 : x
  2. Step 2: Convert to fraction form
    687,672.06/948,972.42 = 381,730.56/x
  3. Step 3: Cross multiply
    687,672.06x = 948,972.42 × 381,730.56
  4. Step 4: Simplify right side
    687,672.06x = 362,251,773,311.16
  5. Step 5: Solve for x
    x = 362,251,773,311.16/687,672.06
  6. Step 6: Final answer
    x = 526,779.83

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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.