Home / 811,661.31-1,120,093.92-449,100.45

Finding the Fourth Proportional to 811,661.31, 1,120,093.92 and 449,100.45

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Solution

The fourth proportional to 811,661.31, 1,120,093.92 and 449,100.45 is: 619,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,661.31 : 1,120,093.92 = 449,100.45 : x
  2. Step 2: Convert to fraction form
    811,661.31/1,120,093.92 = 449,100.45/x
  3. Step 3: Cross multiply
    811,661.31x = 1,120,093.92 × 449,100.45
  4. Step 4: Simplify right side
    811,661.31x = 503,034,683,514.26
  5. Step 5: Solve for x
    x = 503,034,683,514.26/811,661.31
  6. Step 6: Final answer
    x = 619,759.35

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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.