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Finding the Fourth Proportional to 681,990.88, 941,113.20 and 380,126.56

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Solution

The fourth proportional to 681,990.88, 941,113.20 and 380,126.56 is: 524,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,990.88 : 941,113.20 = 380,126.56 : x
  2. Step 2: Convert to fraction form
    681,990.88/941,113.20 = 380,126.56/x
  3. Step 3: Cross multiply
    681,990.88x = 941,113.20 × 380,126.56
  4. Step 4: Simplify right side
    681,990.88x = 357,742,123,286.59
  5. Step 5: Solve for x
    x = 357,742,123,286.59/681,990.88
  6. Step 6: Final answer
    x = 524,555.58

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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.