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Finding the Fourth Proportional to 578,877.12, 798,439.92 and 361,195.44

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Solution

The fourth proportional to 578,877.12, 798,439.92 and 361,195.44 is: 498,193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,877.12 : 798,439.92 = 361,195.44 : x
  2. Step 2: Convert to fraction form
    578,877.12/798,439.92 = 361,195.44/x
  3. Step 3: Cross multiply
    578,877.12x = 798,439.92 × 361,195.44
  4. Step 4: Simplify right side
    578,877.12x = 288,392,858,217.97
  5. Step 5: Solve for x
    x = 288,392,858,217.97/578,877.12
  6. Step 6: Final answer
    x = 498,193.57

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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.