Home / 691,407.40-1,037,111.10-218,140.60

Finding the Fourth Proportional to 691,407.40, 1,037,111.10 and 218,140.60

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Solution

The fourth proportional to 691,407.40, 1,037,111.10 and 218,140.60 is: 327,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,407.40 : 1,037,111.10 = 218,140.60 : x
  2. Step 2: Convert to fraction form
    691,407.40/1,037,111.10 = 218,140.60/x
  3. Step 3: Cross multiply
    691,407.40x = 1,037,111.10 × 218,140.60
  4. Step 4: Simplify right side
    691,407.40x = 226,236,037,620.66
  5. Step 5: Solve for x
    x = 226,236,037,620.66/691,407.40
  6. Step 6: Final answer
    x = 327,210.90

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Similar ratio
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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.