Home / 1,218,106.72-1,680,944.40-674,243.56

Finding the Fourth Proportional to 1,218,106.72, 1,680,944.40 and 674,243.56

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Solution

The fourth proportional to 1,218,106.72, 1,680,944.40 and 674,243.56 is: 930,432.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,106.72 : 1,680,944.40 = 674,243.56 : x
  2. Step 2: Convert to fraction form
    1,218,106.72/1,680,944.40 = 674,243.56/x
  3. Step 3: Cross multiply
    1,218,106.72x = 1,680,944.40 × 674,243.56
  4. Step 4: Simplify right side
    1,218,106.72x = 1,133,365,936,418.06
  5. Step 5: Solve for x
    x = 1,133,365,936,418.06/1,218,106.72
  6. Step 6: Final answer
    x = 930,432.38

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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.