Home / 687,156.33-948,389.56-381,330.94

Finding the Fourth Proportional to 687,156.33, 948,389.56 and 381,330.94

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Solution

The fourth proportional to 687,156.33, 948,389.56 and 381,330.94 is: 526,299.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,156.33 : 948,389.56 = 381,330.94 : x
  2. Step 2: Convert to fraction form
    687,156.33/948,389.56 = 381,330.94/x
  3. Step 3: Cross multiply
    687,156.33x = 948,389.56 × 381,330.94
  4. Step 4: Simplify right side
    687,156.33x = 361,650,280,494.33
  5. Step 5: Solve for x
    x = 361,650,280,494.33/687,156.33
  6. Step 6: Final answer
    x = 526,299.86

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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.