Home / 1,286,900.78-1,776,080.57-743,035.65

Finding the Fourth Proportional to 1,286,900.78, 1,776,080.57 and 743,035.65

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Solution

The fourth proportional to 1,286,900.78, 1,776,080.57 and 743,035.65 is: 1,025,480.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,900.78 : 1,776,080.57 = 743,035.65 : x
  2. Step 2: Convert to fraction form
    1,286,900.78/1,776,080.57 = 743,035.65/x
  3. Step 3: Cross multiply
    1,286,900.78x = 1,776,080.57 × 743,035.65
  4. Step 4: Simplify right side
    1,286,900.78x = 1,319,691,183,944
  5. Step 5: Solve for x
    x = 1,319,691,183,944/1,286,900.78
  6. Step 6: Final answer
    x = 1,025,480.14

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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.