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Finding the Fourth Proportional to 721,374, 1,081,357.80 and 300,770.16

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Solution

The fourth proportional to 721,374, 1,081,357.80 and 300,770.16 is: 450,862.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,374 : 1,081,357.80 = 300,770.16 : x
  2. Step 2: Convert to fraction form
    721,374/1,081,357.80 = 300,770.16/x
  3. Step 3: Cross multiply
    721,374x = 1,081,357.80 × 300,770.16
  4. Step 4: Simplify right side
    721,374x = 325,240,158,523.25
  5. Step 5: Solve for x
    x = 325,240,158,523.25/721,374
  6. Step 6: Final answer
    x = 450,862.05

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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.