Home / 991,188.39-1,367,841.18-538,479.39

Finding the Fourth Proportional to 991,188.39, 1,367,841.18 and 538,479.39

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Solution

The fourth proportional to 991,188.39, 1,367,841.18 and 538,479.39 is: 743,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,188.39 : 1,367,841.18 = 538,479.39 : x
  2. Step 2: Convert to fraction form
    991,188.39/1,367,841.18 = 538,479.39/x
  3. Step 3: Cross multiply
    991,188.39x = 1,367,841.18 × 538,479.39
  4. Step 4: Simplify right side
    991,188.39x = 736,554,284,223.28
  5. Step 5: Solve for x
    x = 736,554,284,223.28/991,188.39
  6. Step 6: Final answer
    x = 743,102.21

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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.