Home / 991,436.20-1,368,190.64-538,727.20

Finding the Fourth Proportional to 991,436.20, 1,368,190.64 and 538,727.20

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Solution

The fourth proportional to 991,436.20, 1,368,190.64 and 538,727.20 is: 743,448.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,436.20 : 1,368,190.64 = 538,727.20 : x
  2. Step 2: Convert to fraction form
    991,436.20/1,368,190.64 = 538,727.20/x
  3. Step 3: Cross multiply
    991,436.20x = 1,368,190.64 × 538,727.20
  4. Step 4: Simplify right side
    991,436.20x = 737,081,512,553.41
  5. Step 5: Solve for x
    x = 737,081,512,553.41/991,436.20
  6. Step 6: Final answer
    x = 743,448.25

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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.