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Finding the Fourth Proportional to 667,597.44, 921,321.36 and 381,209.52

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Solution

The fourth proportional to 667,597.44, 921,321.36 and 381,209.52 is: 526,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,597.44 : 921,321.36 = 381,209.52 : x
  2. Step 2: Convert to fraction form
    667,597.44/921,321.36 = 381,209.52/x
  3. Step 3: Cross multiply
    667,597.44x = 921,321.36 × 381,209.52
  4. Step 4: Simplify right side
    667,597.44x = 351,216,473,411.35
  5. Step 5: Solve for x
    x = 351,216,473,411.35/667,597.44
  6. Step 6: Final answer
    x = 526,090.20

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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.