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Finding the Fourth Proportional to 888,102.39, 1,225,610.43 and 485,694.39

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Solution

The fourth proportional to 888,102.39, 1,225,610.43 and 485,694.39 is: 670,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,102.39 : 1,225,610.43 = 485,694.39 : x
  2. Step 2: Convert to fraction form
    888,102.39/1,225,610.43 = 485,694.39/x
  3. Step 3: Cross multiply
    888,102.39x = 1,225,610.43 × 485,694.39
  4. Step 4: Simplify right side
    888,102.39x = 595,272,110,176.49
  5. Step 5: Solve for x
    x = 595,272,110,176.49/888,102.39
  6. Step 6: Final answer
    x = 670,274.19

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1.5x scale

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.