Home / 1,131,531.95-1,561,131.92-641,448.90

Finding the Fourth Proportional to 1,131,531.95, 1,561,131.92 and 641,448.90

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Solution

The fourth proportional to 1,131,531.95, 1,561,131.92 and 641,448.90 is: 884,982.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,531.95 : 1,561,131.92 = 641,448.90 : x
  2. Step 2: Convert to fraction form
    1,131,531.95/1,561,131.92 = 641,448.90/x
  3. Step 3: Cross multiply
    1,131,531.95x = 1,561,131.92 × 641,448.90
  4. Step 4: Simplify right side
    1,131,531.95x = 1,001,386,349,631.64
  5. Step 5: Solve for x
    x = 1,001,386,349,631.64/1,131,531.95
  6. Step 6: Final answer
    x = 884,982.84

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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.