Home / 1,218,543.80-1,681,642.98-674,679.56

Finding the Fourth Proportional to 1,218,543.80, 1,681,642.98 and 674,679.56

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Solution

The fourth proportional to 1,218,543.80, 1,681,642.98 and 674,679.56 is: 931,086.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,543.80 : 1,681,642.98 = 674,679.56 : x
  2. Step 2: Convert to fraction form
    1,218,543.80/1,681,642.98 = 674,679.56/x
  3. Step 3: Cross multiply
    1,218,543.80x = 1,681,642.98 × 674,679.56
  4. Step 4: Simplify right side
    1,218,543.80x = 1,134,570,137,415.27
  5. Step 5: Solve for x
    x = 1,134,570,137,415.27/1,218,543.80
  6. Step 6: Final answer
    x = 931,086.88

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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.