Home / 1,287,423.80-1,776,233.86-743,487.76

Finding the Fourth Proportional to 1,287,423.80, 1,776,233.86 and 743,487.76

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Solution

The fourth proportional to 1,287,423.80, 1,776,233.86 and 743,487.76 is: 1,025,775.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,423.80 : 1,776,233.86 = 743,487.76 : x
  2. Step 2: Convert to fraction form
    1,287,423.80/1,776,233.86 = 743,487.76/x
  3. Step 3: Cross multiply
    1,287,423.80x = 1,776,233.86 × 743,487.76
  4. Step 4: Simplify right side
    1,287,423.80x = 1,320,608,133,807.55
  5. Step 5: Solve for x
    x = 1,320,608,133,807.55/1,287,423.80
  6. Step 6: Final answer
    x = 1,025,775.77

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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.