Home / 1,287,424.80-1,776,235.24-743,488.76

Finding the Fourth Proportional to 1,287,424.80, 1,776,235.24 and 743,488.76

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Solution

The fourth proportional to 1,287,424.80, 1,776,235.24 and 743,488.76 is: 1,025,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,424.80 : 1,776,235.24 = 743,488.76 : x
  2. Step 2: Convert to fraction form
    1,287,424.80/1,776,235.24 = 743,488.76/x
  3. Step 3: Cross multiply
    1,287,424.80x = 1,776,235.24 × 743,488.76
  4. Step 4: Simplify right side
    1,287,424.80x = 1,320,610,936,055.90
  5. Step 5: Solve for x
    x = 1,320,610,936,055.90/1,287,424.80
  6. Step 6: Final answer
    x = 1,025,777.15

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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.