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Finding the Fourth Proportional to 488,428.91, 674,361.03 and 304,947.11

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Solution

The fourth proportional to 488,428.91, 674,361.03 and 304,947.11 is: 421,032.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,428.91 : 674,361.03 = 304,947.11 : x
  2. Step 2: Convert to fraction form
    488,428.91/674,361.03 = 304,947.11/x
  3. Step 3: Cross multiply
    488,428.91x = 674,361.03 × 304,947.11
  4. Step 4: Simplify right side
    488,428.91x = 205,644,447,195.12
  5. Step 5: Solve for x
    x = 205,644,447,195.12/488,428.91
  6. Step 6: Final answer
    x = 421,032.50

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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.