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Finding the Fourth Proportional to 441,098.80, 661,648.20 and 400,420.60

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Solution

The fourth proportional to 441,098.80, 661,648.20 and 400,420.60 is: 600,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,098.80 : 661,648.20 = 400,420.60 : x
  2. Step 2: Convert to fraction form
    441,098.80/661,648.20 = 400,420.60/x
  3. Step 3: Cross multiply
    441,098.80x = 661,648.20 × 400,420.60
  4. Step 4: Simplify right side
    441,098.80x = 264,937,569,232.92
  5. Step 5: Solve for x
    x = 264,937,569,232.92/441,098.80
  6. Step 6: Final answer
    x = 600,630.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.