Home / 687,670.10-948,937.17-381,722.42

Finding the Fourth Proportional to 687,670.10, 948,937.17 and 381,722.42

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Solution

The fourth proportional to 687,670.10, 948,937.17 and 381,722.42 is: 526,750.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,670.10 : 948,937.17 = 381,722.42 : x
  2. Step 2: Convert to fraction form
    687,670.10/948,937.17 = 381,722.42/x
  3. Step 3: Cross multiply
    687,670.10x = 948,937.17 × 381,722.42
  4. Step 4: Simplify right side
    687,670.10x = 362,230,592,960.35
  5. Step 5: Solve for x
    x = 362,230,592,960.35/687,670.10
  6. Step 6: Final answer
    x = 526,750.53

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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.