Home / 1,043.45-1,439.75-623.65

Finding the Fourth Proportional to 1,043.45, 1,439.75 and 623.65

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Solution

The fourth proportional to 1,043.45, 1,439.75 and 623.65 is: 860.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.45 : 1,439.75 = 623.65 : x
  2. Step 2: Convert to fraction form
    1,043.45/1,439.75 = 623.65/x
  3. Step 3: Cross multiply
    1,043.45x = 1,439.75 × 623.65
  4. Step 4: Simplify right side
    1,043.45x = 897,893.37
  5. Step 5: Solve for x
    x = 897,893.37/1,043.45
  6. Step 6: Final answer
    x = 860.50

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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.