Home / 991,185.42-1,367,845.47-538,479.66

Finding the Fourth Proportional to 991,185.42, 1,367,845.47 and 538,479.66

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Solution

The fourth proportional to 991,185.42, 1,367,845.47 and 538,479.66 is: 743,107.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,185.42 : 1,367,845.47 = 538,479.66 : x
  2. Step 2: Convert to fraction form
    991,185.42/1,367,845.47 = 538,479.66/x
  3. Step 3: Cross multiply
    991,185.42x = 1,367,845.47 × 538,479.66
  4. Step 4: Simplify right side
    991,185.42x = 736,556,963,618.14
  5. Step 5: Solve for x
    x = 736,556,963,618.14/991,185.42
  6. Step 6: Final answer
    x = 743,107.14

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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.