Home / 1,302,618.29-1,797,670.53-721,839.78

Finding the Fourth Proportional to 1,302,618.29, 1,797,670.53 and 721,839.78

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Solution

The fourth proportional to 1,302,618.29, 1,797,670.53 and 721,839.78 is: 996,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,618.29 : 1,797,670.53 = 721,839.78 : x
  2. Step 2: Convert to fraction form
    1,302,618.29/1,797,670.53 = 721,839.78/x
  3. Step 3: Cross multiply
    1,302,618.29x = 1,797,670.53 × 721,839.78
  4. Step 4: Simplify right side
    1,302,618.29x = 1,297,630,099,887.68
  5. Step 5: Solve for x
    x = 1,297,630,099,887.68/1,302,618.29
  6. Step 6: Final answer
    x = 996,170.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.