Home / 1,222,905.87-1,687,765.78-739,474.45

Finding the Fourth Proportional to 1,222,905.87, 1,687,765.78 and 739,474.45

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Solution

The fourth proportional to 1,222,905.87, 1,687,765.78 and 739,474.45 is: 1,020,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,905.87 : 1,687,765.78 = 739,474.45 : x
  2. Step 2: Convert to fraction form
    1,222,905.87/1,687,765.78 = 739,474.45/x
  3. Step 3: Cross multiply
    1,222,905.87x = 1,687,765.78 × 739,474.45
  4. Step 4: Simplify right side
    1,222,905.87x = 1,248,059,668,599.25
  5. Step 5: Solve for x
    x = 1,248,059,668,599.25/1,222,905.87
  6. Step 6: Final answer
    x = 1,020,568.88

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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.