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Finding the Fourth Proportional to 502,190.80, 693,142.86 and 287,454.94

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Solution

The fourth proportional to 502,190.80, 693,142.86 and 287,454.94 is: 396,756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,190.80 : 693,142.86 = 287,454.94 : x
  2. Step 2: Convert to fraction form
    502,190.80/693,142.86 = 287,454.94/x
  3. Step 3: Cross multiply
    502,190.80x = 693,142.86 × 287,454.94
  4. Step 4: Simplify right side
    502,190.80x = 199,247,339,232.73
  5. Step 5: Solve for x
    x = 199,247,339,232.73/502,190.80
  6. Step 6: Final answer
    x = 396,756.25

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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.