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Finding the Fourth Proportional to 662,961.56, 914,862.68 and 405,270.08

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Solution

The fourth proportional to 662,961.56, 914,862.68 and 405,270.08 is: 559,257.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,961.56 : 914,862.68 = 405,270.08 : x
  2. Step 2: Convert to fraction form
    662,961.56/914,862.68 = 405,270.08/x
  3. Step 3: Cross multiply
    662,961.56x = 914,862.68 × 405,270.08
  4. Step 4: Simplify right side
    662,961.56x = 370,766,471,512.61
  5. Step 5: Solve for x
    x = 370,766,471,512.61/662,961.56
  6. Step 6: Final answer
    x = 559,257.87

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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.