Home / 1,291,882.32-1,780,949.88-908,719.92

Finding the Fourth Proportional to 1,291,882.32, 1,780,949.88 and 908,719.92

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Solution

The fourth proportional to 1,291,882.32, 1,780,949.88 and 908,719.92 is: 1,252,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,882.32 : 1,780,949.88 = 908,719.92 : x
  2. Step 2: Convert to fraction form
    1,291,882.32/1,780,949.88 = 908,719.92/x
  3. Step 3: Cross multiply
    1,291,882.32x = 1,780,949.88 × 908,719.92
  4. Step 4: Simplify right side
    1,291,882.32x = 1,618,384,632,477.61
  5. Step 5: Solve for x
    x = 1,618,384,632,477.61/1,291,882.32
  6. Step 6: Final answer
    x = 1,252,733.79

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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.