Home / 1,231,475.67-1,699,418.79-687,620.03

Finding the Fourth Proportional to 1,231,475.67, 1,699,418.79 and 687,620.03

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Solution

The fourth proportional to 1,231,475.67, 1,699,418.79 and 687,620.03 is: 948,905.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,475.67 : 1,699,418.79 = 687,620.03 : x
  2. Step 2: Convert to fraction form
    1,231,475.67/1,699,418.79 = 687,620.03/x
  3. Step 3: Cross multiply
    1,231,475.67x = 1,699,418.79 × 687,620.03
  4. Step 4: Simplify right side
    1,231,475.67x = 1,168,554,390,865.27
  5. Step 5: Solve for x
    x = 1,168,554,390,865.27/1,231,475.67
  6. Step 6: Final answer
    x = 948,905.79

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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.