Home / 691,689.60-1,037,446.92-218,422.80

Finding the Fourth Proportional to 691,689.60, 1,037,446.92 and 218,422.80

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Solution

The fourth proportional to 691,689.60, 1,037,446.92 and 218,422.80 is: 327,606.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,689.60 : 1,037,446.92 = 218,422.80 : x
  2. Step 2: Convert to fraction form
    691,689.60/1,037,446.92 = 218,422.80/x
  3. Step 3: Cross multiply
    691,689.60x = 1,037,446.92 × 218,422.80
  4. Step 4: Simplify right side
    691,689.60x = 226,602,061,117.78
  5. Step 5: Solve for x
    x = 226,602,061,117.78/691,689.60
  6. Step 6: Final answer
    x = 327,606.58

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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.