Home / 1,218,711.56-1,681,820.89-674,847.32

Finding the Fourth Proportional to 1,218,711.56, 1,681,820.89 and 674,847.32

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Solution

The fourth proportional to 1,218,711.56, 1,681,820.89 and 674,847.32 is: 931,288.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,711.56 : 1,681,820.89 = 674,847.32 : x
  2. Step 2: Convert to fraction form
    1,218,711.56/1,681,820.89 = 674,847.32/x
  3. Step 3: Cross multiply
    1,218,711.56x = 1,681,820.89 × 674,847.32
  4. Step 4: Simplify right side
    1,218,711.56x = 1,134,972,310,240.29
  5. Step 5: Solve for x
    x = 1,134,972,310,240.29/1,218,711.56
  6. Step 6: Final answer
    x = 931,288.71

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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.