Home / 1,368,428.67-1,888,286.88-756,482.78

Finding the Fourth Proportional to 1,368,428.67, 1,888,286.88 and 756,482.78

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Solution

The fourth proportional to 1,368,428.67, 1,888,286.88 and 756,482.78 is: 1,043,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,428.67 : 1,888,286.88 = 756,482.78 : x
  2. Step 2: Convert to fraction form
    1,368,428.67/1,888,286.88 = 756,482.78/x
  3. Step 3: Cross multiply
    1,368,428.67x = 1,888,286.88 × 756,482.78
  4. Step 4: Simplify right side
    1,368,428.67x = 1,428,456,498,978.49
  5. Step 5: Solve for x
    x = 1,428,456,498,978.49/1,368,428.67
  6. Step 6: Final answer
    x = 1,043,866.25

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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.