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Finding the Fourth Proportional to 887,682.80, 1,331,308.20 and 256,530.80

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Solution

The fourth proportional to 887,682.80, 1,331,308.20 and 256,530.80 is: 384,733.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,682.80 : 1,331,308.20 = 256,530.80 : x
  2. Step 2: Convert to fraction form
    887,682.80/1,331,308.20 = 256,530.80/x
  3. Step 3: Cross multiply
    887,682.80x = 1,331,308.20 × 256,530.80
  4. Step 4: Simplify right side
    887,682.80x = 341,521,557,592.56
  5. Step 5: Solve for x
    x = 341,521,557,592.56/887,682.80
  6. Step 6: Final answer
    x = 384,733.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.