Home / 1,247,805.70-1,871,708.55-680,935.30

Finding the Fourth Proportional to 1,247,805.70, 1,871,708.55 and 680,935.30

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Solution

The fourth proportional to 1,247,805.70, 1,871,708.55 and 680,935.30 is: 1,021,402.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,805.70 : 1,871,708.55 = 680,935.30 : x
  2. Step 2: Convert to fraction form
    1,247,805.70/1,871,708.55 = 680,935.30/x
  3. Step 3: Cross multiply
    1,247,805.70x = 1,871,708.55 × 680,935.30
  4. Step 4: Simplify right side
    1,247,805.70x = 1,274,512,423,006.82
  5. Step 5: Solve for x
    x = 1,274,512,423,006.82/1,247,805.70
  6. Step 6: Final answer
    x = 1,021,402.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.