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Finding the Fourth Proportional to 658,760.88, 908,739.42 and 400,716.72

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Solution

The fourth proportional to 658,760.88, 908,739.42 and 400,716.72 is: 552,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,760.88 : 908,739.42 = 400,716.72 : x
  2. Step 2: Convert to fraction form
    658,760.88/908,739.42 = 400,716.72/x
  3. Step 3: Cross multiply
    658,760.88x = 908,739.42 × 400,716.72
  4. Step 4: Simplify right side
    658,760.88x = 364,147,079,717.10
  5. Step 5: Solve for x
    x = 364,147,079,717.10/658,760.88
  6. Step 6: Final answer
    x = 552,775.81

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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.