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Finding the Fourth Proportional to 888,039.40, 1,332,059.10 and 389,403.40

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Solution

The fourth proportional to 888,039.40, 1,332,059.10 and 389,403.40 is: 584,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,039.40 : 1,332,059.10 = 389,403.40 : x
  2. Step 2: Convert to fraction form
    888,039.40/1,332,059.10 = 389,403.40/x
  3. Step 3: Cross multiply
    888,039.40x = 1,332,059.10 × 389,403.40
  4. Step 4: Simplify right side
    888,039.40x = 518,708,342,540.94
  5. Step 5: Solve for x
    x = 518,708,342,540.94/888,039.40
  6. Step 6: Final answer
    x = 584,105.10

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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.