Home / 991,615.56-1,368,440.10-538,906.60

Finding the Fourth Proportional to 991,615.56, 1,368,440.10 and 538,906.60

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Solution

The fourth proportional to 991,615.56, 1,368,440.10 and 538,906.60 is: 743,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,615.56 : 1,368,440.10 = 538,906.60 : x
  2. Step 2: Convert to fraction form
    991,615.56/1,368,440.10 = 538,906.60/x
  3. Step 3: Cross multiply
    991,615.56x = 1,368,440.10 × 538,906.60
  4. Step 4: Simplify right side
    991,615.56x = 737,461,401,594.66
  5. Step 5: Solve for x
    x = 737,461,401,594.66/991,615.56
  6. Step 6: Final answer
    x = 743,696.88

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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.