Home / 1,287,449.84-1,776,270.18-743,513.78

Finding the Fourth Proportional to 1,287,449.84, 1,776,270.18 and 743,513.78

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Solution

The fourth proportional to 1,287,449.84, 1,776,270.18 and 743,513.78 is: 1,025,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,449.84 : 1,776,270.18 = 743,513.78 : x
  2. Step 2: Convert to fraction form
    1,287,449.84/1,776,270.18 = 743,513.78/x
  3. Step 3: Cross multiply
    1,287,449.84x = 1,776,270.18 × 743,513.78
  4. Step 4: Simplify right side
    1,287,449.84x = 1,320,681,355,833.08
  5. Step 5: Solve for x
    x = 1,320,681,355,833.08/1,287,449.84
  6. Step 6: Final answer
    x = 1,025,811.89

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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.