Home / 686,948.72-948,102.75-381,123.59

Finding the Fourth Proportional to 686,948.72, 948,102.75 and 381,123.59

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Solution

The fourth proportional to 686,948.72, 948,102.75 and 381,123.59 is: 526,013.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,948.72 : 948,102.75 = 381,123.59 : x
  2. Step 2: Convert to fraction form
    686,948.72/948,102.75 = 381,123.59/x
  3. Step 3: Cross multiply
    686,948.72x = 948,102.75 × 381,123.59
  4. Step 4: Simplify right side
    686,948.72x = 361,344,327,034.59
  5. Step 5: Solve for x
    x = 361,344,327,034.59/686,948.72
  6. Step 6: Final answer
    x = 526,013.54

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Double scale
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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.