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Finding the Fourth Proportional to 1,278,953.76, 1,764,956.52 and 705,994.32

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Solution

The fourth proportional to 1,278,953.76, 1,764,956.52 and 705,994.32 is: 974,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,953.76 : 1,764,956.52 = 705,994.32 : x
  2. Step 2: Convert to fraction form
    1,278,953.76/1,764,956.52 = 705,994.32/x
  3. Step 3: Cross multiply
    1,278,953.76x = 1,764,956.52 × 705,994.32
  4. Step 4: Simplify right side
    1,278,953.76x = 1,246,049,278,166.97
  5. Step 5: Solve for x
    x = 1,246,049,278,166.97/1,278,953.76
  6. Step 6: Final answer
    x = 974,272.34

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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.