Home / 991,574.80-1,368,343.56-538,866.64

Finding the Fourth Proportional to 991,574.80, 1,368,343.56 and 538,866.64

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Solution

The fourth proportional to 991,574.80, 1,368,343.56 and 538,866.64 is: 743,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,574.80 : 1,368,343.56 = 538,866.64 : x
  2. Step 2: Convert to fraction form
    991,574.80/1,368,343.56 = 538,866.64/x
  3. Step 3: Cross multiply
    991,574.80x = 1,368,343.56 × 538,866.64
  4. Step 4: Simplify right side
    991,574.80x = 737,354,696,542.84
  5. Step 5: Solve for x
    x = 737,354,696,542.84/991,574.80
  6. Step 6: Final answer
    x = 743,619.84

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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.