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Finding the Fourth Proportional to 1,278,751.76, 1,764,551.79 and 705,755.03

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Solution

The fourth proportional to 1,278,751.76, 1,764,551.79 and 705,755.03 is: 973,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,751.76 : 1,764,551.79 = 705,755.03 : x
  2. Step 2: Convert to fraction form
    1,278,751.76/1,764,551.79 = 705,755.03/x
  3. Step 3: Cross multiply
    1,278,751.76x = 1,764,551.79 × 705,755.03
  4. Step 4: Simplify right side
    1,278,751.76x = 1,245,341,292,665.24
  5. Step 5: Solve for x
    x = 1,245,341,292,665.24/1,278,751.76
  6. Step 6: Final answer
    x = 973,872.59

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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.