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Finding the Fourth Proportional to 667,652.01, 921,359.88 and 361,730.50

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Solution

The fourth proportional to 667,652.01, 921,359.88 and 361,730.50 is: 499,188.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,652.01 : 921,359.88 = 361,730.50 : x
  2. Step 2: Convert to fraction form
    667,652.01/921,359.88 = 361,730.50/x
  3. Step 3: Cross multiply
    667,652.01x = 921,359.88 × 361,730.50
  4. Step 4: Simplify right side
    667,652.01x = 333,283,970,072.34
  5. Step 5: Solve for x
    x = 333,283,970,072.34/667,652.01
  6. Step 6: Final answer
    x = 499,188.15

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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.