Home / 721,912.80-1,082,869.20-223,276.80

Finding the Fourth Proportional to 721,912.80, 1,082,869.20 and 223,276.80

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Solution

The fourth proportional to 721,912.80, 1,082,869.20 and 223,276.80 is: 334,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,912.80 : 1,082,869.20 = 223,276.80 : x
  2. Step 2: Convert to fraction form
    721,912.80/1,082,869.20 = 223,276.80/x
  3. Step 3: Cross multiply
    721,912.80x = 1,082,869.20 × 223,276.80
  4. Step 4: Simplify right side
    721,912.80x = 241,779,569,794.56
  5. Step 5: Solve for x
    x = 241,779,569,794.56/721,912.80
  6. Step 6: Final answer
    x = 334,915.20

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Double scale
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Similar ratio
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1.5x scale

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.