Home / 1,288,209.12-1,777,694.76-715,234.56

Finding the Fourth Proportional to 1,288,209.12, 1,777,694.76 and 715,234.56

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Solution

The fourth proportional to 1,288,209.12, 1,777,694.76 and 715,234.56 is: 987,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,209.12 : 1,777,694.76 = 715,234.56 : x
  2. Step 2: Convert to fraction form
    1,288,209.12/1,777,694.76 = 715,234.56/x
  3. Step 3: Cross multiply
    1,288,209.12x = 1,777,694.76 × 715,234.56
  4. Step 4: Simplify right side
    1,288,209.12x = 1,271,468,729,482.91
  5. Step 5: Solve for x
    x = 1,271,468,729,482.91/1,288,209.12
  6. Step 6: Final answer
    x = 987,004.91

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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.