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Finding the Fourth Proportional to 1,278,971.02, 1,764,958.44 and 705,996.46

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Solution

The fourth proportional to 1,278,971.02, 1,764,958.44 and 705,996.46 is: 974,263.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,971.02 : 1,764,958.44 = 705,996.46 : x
  2. Step 2: Convert to fraction form
    1,278,971.02/1,764,958.44 = 705,996.46/x
  3. Step 3: Cross multiply
    1,278,971.02x = 1,764,958.44 × 705,996.46
  4. Step 4: Simplify right side
    1,278,971.02x = 1,246,054,410,687.12
  5. Step 5: Solve for x
    x = 1,246,054,410,687.12/1,278,971.02
  6. Step 6: Final answer
    x = 974,263.21

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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.