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Finding the Fourth Proportional to 658,694.40, 908,647.63 and 400,650.27

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Solution

The fourth proportional to 658,694.40, 908,647.63 and 400,650.27 is: 552,684.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,694.40 : 908,647.63 = 400,650.27 : x
  2. Step 2: Convert to fraction form
    658,694.40/908,647.63 = 400,650.27/x
  3. Step 3: Cross multiply
    658,694.40x = 908,647.63 × 400,650.27
  4. Step 4: Simplify right side
    658,694.40x = 364,049,918,294.36
  5. Step 5: Solve for x
    x = 364,049,918,294.36/658,694.40
  6. Step 6: Final answer
    x = 552,684.09

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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.