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Finding the Fourth Proportional to 667,445.04, 921,061.80 and 365,636.88

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Solution

The fourth proportional to 667,445.04, 921,061.80 and 365,636.88 is: 504,572.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,445.04 : 921,061.80 = 365,636.88 : x
  2. Step 2: Convert to fraction form
    667,445.04/921,061.80 = 365,636.88/x
  3. Step 3: Cross multiply
    667,445.04x = 921,061.80 × 365,636.88
  4. Step 4: Simplify right side
    667,445.04x = 336,774,162,839.18
  5. Step 5: Solve for x
    x = 336,774,162,839.18/667,445.04
  6. Step 6: Final answer
    x = 504,572.13

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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.