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Finding the Fourth Proportional to 502,760.55, 693,959.13 and 288,043.59

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Solution

The fourth proportional to 502,760.55, 693,959.13 and 288,043.59 is: 397,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,760.55 : 693,959.13 = 288,043.59 : x
  2. Step 2: Convert to fraction form
    502,760.55/693,959.13 = 288,043.59/x
  3. Step 3: Cross multiply
    502,760.55x = 693,959.13 × 288,043.59
  4. Step 4: Simplify right side
    502,760.55x = 199,890,479,118.48
  5. Step 5: Solve for x
    x = 199,890,479,118.48/502,760.55
  6. Step 6: Final answer
    x = 397,585.85

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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.