Home / 1,287,329.42-1,776,555.38-743,455.33

Finding the Fourth Proportional to 1,287,329.42, 1,776,555.38 and 743,455.33

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Solution

The fourth proportional to 1,287,329.42, 1,776,555.38 and 743,455.33 is: 1,025,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,329.42 : 1,776,555.38 = 743,455.33 : x
  2. Step 2: Convert to fraction form
    1,287,329.42/1,776,555.38 = 743,455.33/x
  3. Step 3: Cross multiply
    1,287,329.42x = 1,776,555.38 × 743,455.33
  4. Step 4: Simplify right side
    1,287,329.42x = 1,320,789,563,718.43
  5. Step 5: Solve for x
    x = 1,320,789,563,718.43/1,287,329.42
  6. Step 6: Final answer
    x = 1,025,991.90

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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.