Home / 991,131.36-1,367,753.76-538,425.60

Finding the Fourth Proportional to 991,131.36, 1,367,753.76 and 538,425.60

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Solution

The fourth proportional to 991,131.36, 1,367,753.76 and 538,425.60 is: 743,023.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,131.36 : 1,367,753.76 = 538,425.60 : x
  2. Step 2: Convert to fraction form
    991,131.36/1,367,753.76 = 538,425.60/x
  3. Step 3: Cross multiply
    991,131.36x = 1,367,753.76 × 538,425.60
  4. Step 4: Simplify right side
    991,131.36x = 736,433,638,880.26
  5. Step 5: Solve for x
    x = 736,433,638,880.26/991,131.36
  6. Step 6: Final answer
    x = 743,023.24

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1.5x scale

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.