Home / 1,230,979.28-1,699,034.80-721,845.68

Finding the Fourth Proportional to 1,230,979.28, 1,699,034.80 and 721,845.68

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Solution

The fourth proportional to 1,230,979.28, 1,699,034.80 and 721,845.68 is: 996,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,979.28 : 1,699,034.80 = 721,845.68 : x
  2. Step 2: Convert to fraction form
    1,230,979.28/1,699,034.80 = 721,845.68/x
  3. Step 3: Cross multiply
    1,230,979.28x = 1,699,034.80 × 721,845.68
  4. Step 4: Simplify right side
    1,230,979.28x = 1,226,440,930,549.66
  5. Step 5: Solve for x
    x = 1,226,440,930,549.66/1,230,979.28
  6. Step 6: Final answer
    x = 996,313.22

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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.