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Finding the Fourth Proportional to 1,278,731.95, 1,764,524.46 and 705,735.13

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Solution

The fourth proportional to 1,278,731.95, 1,764,524.46 and 705,735.13 is: 973,845.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,731.95 : 1,764,524.46 = 705,735.13 : x
  2. Step 2: Convert to fraction form
    1,278,731.95/1,764,524.46 = 705,735.13/x
  3. Step 3: Cross multiply
    1,278,731.95x = 1,764,524.46 × 705,735.13
  4. Step 4: Simplify right side
    1,278,731.95x = 1,245,286,899,166.28
  5. Step 5: Solve for x
    x = 1,245,286,899,166.28/1,278,731.95
  6. Step 6: Final answer
    x = 973,845.14

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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.