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Finding the Fourth Proportional to 681,364.98, 940,271.49 and 379,552.50

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Solution

The fourth proportional to 681,364.98, 940,271.49 and 379,552.50 is: 523,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,364.98 : 940,271.49 = 379,552.50 : x
  2. Step 2: Convert to fraction form
    681,364.98/940,271.49 = 379,552.50/x
  3. Step 3: Cross multiply
    681,364.98x = 940,271.49 × 379,552.50
  4. Step 4: Simplify right side
    681,364.98x = 356,882,394,708.23
  5. Step 5: Solve for x
    x = 356,882,394,708.23/681,364.98
  6. Step 6: Final answer
    x = 523,775.66

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1.5x scale

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.