Home / 721,371-1,081,353.30-300,767.16

Finding the Fourth Proportional to 721,371, 1,081,353.30 and 300,767.16

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Solution

The fourth proportional to 721,371, 1,081,353.30 and 300,767.16 is: 450,857.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,371 : 1,081,353.30 = 300,767.16 : x
  2. Step 2: Convert to fraction form
    721,371/1,081,353.30 = 300,767.16/x
  3. Step 3: Cross multiply
    721,371x = 1,081,353.30 × 300,767.16
  4. Step 4: Simplify right side
    721,371x = 325,235,560,997.63
  5. Step 5: Solve for x
    x = 325,235,560,997.63/721,371
  6. Step 6: Final answer
    x = 450,857.55

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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.