Home / 721,314.60-1,079,898.30-441,378.60

Finding the Fourth Proportional to 721,314.60, 1,079,898.30 and 441,378.60

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Solution

The fourth proportional to 721,314.60, 1,079,898.30 and 441,378.60 is: 660,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,314.60 : 1,079,898.30 = 441,378.60 : x
  2. Step 2: Convert to fraction form
    721,314.60/1,079,898.30 = 441,378.60/x
  3. Step 3: Cross multiply
    721,314.60x = 1,079,898.30 × 441,378.60
  4. Step 4: Simplify right side
    721,314.60x = 476,643,999,796.38
  5. Step 5: Solve for x
    x = 476,643,999,796.38/721,314.60
  6. Step 6: Final answer
    x = 660,799.05

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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.