Home / 667,760.40-921,828.54-381,225.14

Finding the Fourth Proportional to 667,760.40, 921,828.54 and 381,225.14

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Solution

The fourth proportional to 667,760.40, 921,828.54 and 381,225.14 is: 526,272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,760.40 : 921,828.54 = 381,225.14 : x
  2. Step 2: Convert to fraction form
    667,760.40/921,828.54 = 381,225.14/x
  3. Step 3: Cross multiply
    667,760.40x = 921,828.54 × 381,225.14
  4. Step 4: Simplify right side
    667,760.40x = 351,424,214,217.50
  5. Step 5: Solve for x
    x = 351,424,214,217.50/667,760.40
  6. Step 6: Final answer
    x = 526,272.92

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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.