Home / 721,000.10-1,081,406.16-188,562.20

Finding the Fourth Proportional to 721,000.10, 1,081,406.16 and 188,562.20

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Solution

The fourth proportional to 721,000.10, 1,081,406.16 and 188,562.20 is: 282,818.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,000.10 : 1,081,406.16 = 188,562.20 : x
  2. Step 2: Convert to fraction form
    721,000.10/1,081,406.16 = 188,562.20/x
  3. Step 3: Cross multiply
    721,000.10x = 1,081,406.16 × 188,562.20
  4. Step 4: Simplify right side
    721,000.10x = 203,912,324,623.15
  5. Step 5: Solve for x
    x = 203,912,324,623.15/721,000.10
  6. Step 6: Final answer
    x = 282,818.72

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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.