Home / 991,356.47-1,368,080.28-538,647.47

Finding the Fourth Proportional to 991,356.47, 1,368,080.28 and 538,647.47

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Solution

The fourth proportional to 991,356.47, 1,368,080.28 and 538,647.47 is: 743,338.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,356.47 : 1,368,080.28 = 538,647.47 : x
  2. Step 2: Convert to fraction form
    991,356.47/1,368,080.28 = 538,647.47/x
  3. Step 3: Cross multiply
    991,356.47x = 1,368,080.28 × 538,647.47
  4. Step 4: Simplify right side
    991,356.47x = 736,912,979,868.79
  5. Step 5: Solve for x
    x = 736,912,979,868.79/991,356.47
  6. Step 6: Final answer
    x = 743,338.05

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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.