Home / 991,195.89-1,367,851.53-538,486.89

Finding the Fourth Proportional to 991,195.89, 1,367,851.53 and 538,486.89

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Solution

The fourth proportional to 991,195.89, 1,367,851.53 and 538,486.89 is: 743,112.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,195.89 : 1,367,851.53 = 538,486.89 : x
  2. Step 2: Convert to fraction form
    991,195.89/1,367,851.53 = 538,486.89/x
  3. Step 3: Cross multiply
    991,195.89x = 1,367,851.53 × 538,486.89
  4. Step 4: Simplify right side
    991,195.89x = 736,570,116,371.44
  5. Step 5: Solve for x
    x = 736,570,116,371.44/991,195.89
  6. Step 6: Final answer
    x = 743,112.56

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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.