Home / 681,107.61-939,861.23-379,329.69

Finding the Fourth Proportional to 681,107.61, 939,861.23 and 379,329.69

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Solution

The fourth proportional to 681,107.61, 939,861.23 and 379,329.69 is: 523,437.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,107.61 : 939,861.23 = 379,329.69 : x
  2. Step 2: Convert to fraction form
    681,107.61/939,861.23 = 379,329.69/x
  3. Step 3: Cross multiply
    681,107.61x = 939,861.23 × 379,329.69
  4. Step 4: Simplify right side
    681,107.61x = 356,517,267,122.27
  5. Step 5: Solve for x
    x = 356,517,267,122.27/681,107.61
  6. Step 6: Final answer
    x = 523,437.50

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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.