Home / 1,218,700.20-1,681,785.72-674,824.30

Finding the Fourth Proportional to 1,218,700.20, 1,681,785.72 and 674,824.30

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Solution

The fourth proportional to 1,218,700.20, 1,681,785.72 and 674,824.30 is: 931,246.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,700.20 : 1,681,785.72 = 674,824.30 : x
  2. Step 2: Convert to fraction form
    1,218,700.20/1,681,785.72 = 674,824.30/x
  3. Step 3: Cross multiply
    1,218,700.20x = 1,681,785.72 × 674,824.30
  4. Step 4: Simplify right side
    1,218,700.20x = 1,134,909,871,249.00
  5. Step 5: Solve for x
    x = 1,134,909,871,249.00/1,218,700.20
  6. Step 6: Final answer
    x = 931,246.15

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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.