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Finding the Fourth Proportional to 408,708.40, 613,062.60 and 363,607.60

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Solution

The fourth proportional to 408,708.40, 613,062.60 and 363,607.60 is: 545,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,708.40 : 613,062.60 = 363,607.60 : x
  2. Step 2: Convert to fraction form
    408,708.40/613,062.60 = 363,607.60/x
  3. Step 3: Cross multiply
    408,708.40x = 613,062.60 × 363,607.60
  4. Step 4: Simplify right side
    408,708.40x = 222,914,220,635.76
  5. Step 5: Solve for x
    x = 222,914,220,635.76/408,708.40
  6. Step 6: Final answer
    x = 545,411.40

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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.