Home / 842,787.48-1,263,917.70-281,690.76

Finding the Fourth Proportional to 842,787.48, 1,263,917.70 and 281,690.76

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Solution

The fourth proportional to 842,787.48, 1,263,917.70 and 281,690.76 is: 422,448.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,787.48 : 1,263,917.70 = 281,690.76 : x
  2. Step 2: Convert to fraction form
    842,787.48/1,263,917.70 = 281,690.76/x
  3. Step 3: Cross multiply
    842,787.48x = 1,263,917.70 × 281,690.76
  4. Step 4: Simplify right side
    842,787.48x = 356,033,937,490.45
  5. Step 5: Solve for x
    x = 356,033,937,490.45/842,787.48
  6. Step 6: Final answer
    x = 422,448.06

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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.