Home / 869,481.28-1,199,868.80-487,506.88

Finding the Fourth Proportional to 869,481.28, 1,199,868.80 and 487,506.88

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Solution

The fourth proportional to 869,481.28, 1,199,868.80 and 487,506.88 is: 672,750.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,481.28 : 1,199,868.80 = 487,506.88 : x
  2. Step 2: Convert to fraction form
    869,481.28/1,199,868.80 = 487,506.88/x
  3. Step 3: Cross multiply
    869,481.28x = 1,199,868.80 × 487,506.88
  4. Step 4: Simplify right side
    869,481.28x = 584,944,295,097.34
  5. Step 5: Solve for x
    x = 584,944,295,097.34/869,481.28
  6. Step 6: Final answer
    x = 672,750.88

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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.