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Finding the Fourth Proportional to 1,222,908.40, 1,834,362.60 and 942,972.40

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Solution

The fourth proportional to 1,222,908.40, 1,834,362.60 and 942,972.40 is: 1,414,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,908.40 : 1,834,362.60 = 942,972.40 : x
  2. Step 2: Convert to fraction form
    1,222,908.40/1,834,362.60 = 942,972.40/x
  3. Step 3: Cross multiply
    1,222,908.40x = 1,834,362.60 × 942,972.40
  4. Step 4: Simplify right side
    1,222,908.40x = 1,729,753,303,392.24
  5. Step 5: Solve for x
    x = 1,729,753,303,392.24/1,222,908.40
  6. Step 6: Final answer
    x = 1,414,458.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.