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Finding the Fourth Proportional to 658,611.73, 908,878.48 and 356,805.01

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Solution

The fourth proportional to 658,611.73, 908,878.48 and 356,805.01 is: 492,387.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,611.73 : 908,878.48 = 356,805.01 : x
  2. Step 2: Convert to fraction form
    658,611.73/908,878.48 = 356,805.01/x
  3. Step 3: Cross multiply
    658,611.73x = 908,878.48 × 356,805.01
  4. Step 4: Simplify right side
    658,611.73x = 324,292,395,145.19
  5. Step 5: Solve for x
    x = 324,292,395,145.19/658,611.73
  6. Step 6: Final answer
    x = 492,387.82

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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.