Home / 691,806.20-1,037,709.30-218,539.40

Finding the Fourth Proportional to 691,806.20, 1,037,709.30 and 218,539.40

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Solution

The fourth proportional to 691,806.20, 1,037,709.30 and 218,539.40 is: 327,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,806.20 : 1,037,709.30 = 218,539.40 : x
  2. Step 2: Convert to fraction form
    691,806.20/1,037,709.30 = 218,539.40/x
  3. Step 3: Cross multiply
    691,806.20x = 1,037,709.30 × 218,539.40
  4. Step 4: Simplify right side
    691,806.20x = 226,780,367,796.42
  5. Step 5: Solve for x
    x = 226,780,367,796.42/691,806.20
  6. Step 6: Final answer
    x = 327,809.10

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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.