Home / 880,243.20-1,318,809.60-721,612.80

Finding the Fourth Proportional to 880,243.20, 1,318,809.60 and 721,612.80

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Solution

The fourth proportional to 880,243.20, 1,318,809.60 and 721,612.80 is: 1,081,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,243.20 : 1,318,809.60 = 721,612.80 : x
  2. Step 2: Convert to fraction form
    880,243.20/1,318,809.60 = 721,612.80/x
  3. Step 3: Cross multiply
    880,243.20x = 1,318,809.60 × 721,612.80
  4. Step 4: Simplify right side
    880,243.20x = 951,669,888,122.88
  5. Step 5: Solve for x
    x = 951,669,888,122.88/880,243.20
  6. Step 6: Final answer
    x = 1,081,144.27

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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.