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Finding the Fourth Proportional to 888,135.88, 1,225,602.42 and 485,719.24

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Solution

The fourth proportional to 888,135.88, 1,225,602.42 and 485,719.24 is: 670,278.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,135.88 : 1,225,602.42 = 485,719.24 : x
  2. Step 2: Convert to fraction form
    888,135.88/1,225,602.42 = 485,719.24/x
  3. Step 3: Cross multiply
    888,135.88x = 1,225,602.42 × 485,719.24
  4. Step 4: Simplify right side
    888,135.88x = 595,298,675,984.56
  5. Step 5: Solve for x
    x = 595,298,675,984.56/888,135.88
  6. Step 6: Final answer
    x = 670,278.83

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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.