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Finding the Fourth Proportional to 658,278.06, 908,418.48 and 356,472.06

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Solution

The fourth proportional to 658,278.06, 908,418.48 and 356,472.06 is: 491,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,278.06 : 908,418.48 = 356,472.06 : x
  2. Step 2: Convert to fraction form
    658,278.06/908,418.48 = 356,472.06/x
  3. Step 3: Cross multiply
    658,278.06x = 908,418.48 × 356,472.06
  4. Step 4: Simplify right side
    658,278.06x = 323,825,806,907.67
  5. Step 5: Solve for x
    x = 323,825,806,907.67/658,278.06
  6. Step 6: Final answer
    x = 491,928.60

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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.