Home / 1,690,921.44-2,333,441.52-926,981.28

Finding the Fourth Proportional to 1,690,921.44, 2,333,441.52 and 926,981.28

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Solution

The fourth proportional to 1,690,921.44, 2,333,441.52 and 926,981.28 is: 1,279,217.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,921.44 : 2,333,441.52 = 926,981.28 : x
  2. Step 2: Convert to fraction form
    1,690,921.44/2,333,441.52 = 926,981.28/x
  3. Step 3: Cross multiply
    1,690,921.44x = 2,333,441.52 × 926,981.28
  4. Step 4: Simplify right side
    1,690,921.44x = 2,163,056,607,014.75
  5. Step 5: Solve for x
    x = 2,163,056,607,014.75/1,690,921.44
  6. Step 6: Final answer
    x = 1,279,217.68

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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.