Home / 1,231,473.42-1,699,415.69-687,617.78

Finding the Fourth Proportional to 1,231,473.42, 1,699,415.69 and 687,617.78

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Solution

The fourth proportional to 1,231,473.42, 1,699,415.69 and 687,617.78 is: 948,902.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,473.42 : 1,699,415.69 = 687,617.78 : x
  2. Step 2: Convert to fraction form
    1,231,473.42/1,699,415.69 = 687,617.78/x
  3. Step 3: Cross multiply
    1,231,473.42x = 1,699,415.69 × 687,617.78
  4. Step 4: Simplify right side
    1,231,473.42x = 1,168,548,432,119.80
  5. Step 5: Solve for x
    x = 1,168,548,432,119.80/1,231,473.42
  6. Step 6: Final answer
    x = 948,902.68

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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.