Home / 1,218,102.73-1,680,938.89-674,239.57

Finding the Fourth Proportional to 1,218,102.73, 1,680,938.89 and 674,239.57

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Solution

The fourth proportional to 1,218,102.73, 1,680,938.89 and 674,239.57 is: 930,426.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,102.73 : 1,680,938.89 = 674,239.57 : x
  2. Step 2: Convert to fraction form
    1,218,102.73/1,680,938.89 = 674,239.57/x
  3. Step 3: Cross multiply
    1,218,102.73x = 1,680,938.89 × 674,239.57
  4. Step 4: Simplify right side
    1,218,102.73x = 1,133,355,508,501.93
  5. Step 5: Solve for x
    x = 1,133,355,508,501.93/1,218,102.73
  6. Step 6: Final answer
    x = 930,426.87

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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.