Home / 1,231,500.12-1,699,499-687,617.52

Finding the Fourth Proportional to 1,231,500.12, 1,699,499 and 687,617.52

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Solution

The fourth proportional to 1,231,500.12, 1,699,499 and 687,617.52 is: 948,928.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,500.12 : 1,699,499 = 687,617.52 : x
  2. Step 2: Convert to fraction form
    1,231,500.12/1,699,499 = 687,617.52/x
  3. Step 3: Cross multiply
    1,231,500.12x = 1,699,499 × 687,617.52
  4. Step 4: Simplify right side
    1,231,500.12x = 1,168,605,287,622.48
  5. Step 5: Solve for x
    x = 1,168,605,287,622.48/1,231,500.12
  6. Step 6: Final answer
    x = 948,928.28

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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.