Home / 1,131,531.45-1,561,131.22-641,448.40

Finding the Fourth Proportional to 1,131,531.45, 1,561,131.22 and 641,448.40

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Solution

The fourth proportional to 1,131,531.45, 1,561,131.22 and 641,448.40 is: 884,982.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,531.45 : 1,561,131.22 = 641,448.40 : x
  2. Step 2: Convert to fraction form
    1,131,531.45/1,561,131.22 = 641,448.40/x
  3. Step 3: Cross multiply
    1,131,531.45x = 1,561,131.22 × 641,448.40
  4. Step 4: Simplify right side
    1,131,531.45x = 1,001,385,123,259.05
  5. Step 5: Solve for x
    x = 1,001,385,123,259.05/1,131,531.45
  6. Step 6: Final answer
    x = 884,982.14

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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.