Home / 691,401.30-1,037,101.98-218,123.58

Finding the Fourth Proportional to 691,401.30, 1,037,101.98 and 218,123.58

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Solution

The fourth proportional to 691,401.30, 1,037,101.98 and 218,123.58 is: 327,185.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,401.30 : 1,037,101.98 = 218,123.58 : x
  2. Step 2: Convert to fraction form
    691,401.30/1,037,101.98 = 218,123.58/x
  3. Step 3: Cross multiply
    691,401.30x = 1,037,101.98 × 218,123.58
  4. Step 4: Simplify right side
    691,401.30x = 226,216,396,702.69
  5. Step 5: Solve for x
    x = 226,216,396,702.69/691,401.30
  6. Step 6: Final answer
    x = 327,185.38

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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.