Home / 1,231,515.69-1,699,475.56-687,660.74

Finding the Fourth Proportional to 1,231,515.69, 1,699,475.56 and 687,660.74

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Solution

The fourth proportional to 1,231,515.69, 1,699,475.56 and 687,660.74 is: 948,962.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,515.69 : 1,699,475.56 = 687,660.74 : x
  2. Step 2: Convert to fraction form
    1,231,515.69/1,699,475.56 = 687,660.74/x
  3. Step 3: Cross multiply
    1,231,515.69x = 1,699,475.56 × 687,660.74
  4. Step 4: Simplify right side
    1,231,515.69x = 1,168,662,612,704.14
  5. Step 5: Solve for x
    x = 1,168,662,612,704.14/1,231,515.69
  6. Step 6: Final answer
    x = 948,962.83

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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.