Home / 1,231,176.34-1,699,108.92-687,419.02

Finding the Fourth Proportional to 1,231,176.34, 1,699,108.92 and 687,419.02

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Solution

The fourth proportional to 1,231,176.34, 1,699,108.92 and 687,419.02 is: 948,686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,176.34 : 1,699,108.92 = 687,419.02 : x
  2. Step 2: Convert to fraction form
    1,231,176.34/1,699,108.92 = 687,419.02/x
  3. Step 3: Cross multiply
    1,231,176.34x = 1,699,108.92 × 687,419.02
  4. Step 4: Simplify right side
    1,231,176.34x = 1,167,999,788,659.66
  5. Step 5: Solve for x
    x = 1,167,999,788,659.66/1,231,176.34
  6. Step 6: Final answer
    x = 948,686.03

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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.