Home / 1,043.11-1,439.23-623.62

Finding the Fourth Proportional to 1,043.11, 1,439.23 and 623.62

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Solution

The fourth proportional to 1,043.11, 1,439.23 and 623.62 is: 860.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.11 : 1,439.23 = 623.62 : x
  2. Step 2: Convert to fraction form
    1,043.11/1,439.23 = 623.62/x
  3. Step 3: Cross multiply
    1,043.11x = 1,439.23 × 623.62
  4. Step 4: Simplify right side
    1,043.11x = 897,532.61
  5. Step 5: Solve for x
    x = 897,532.61/1,043.11
  6. Step 6: Final answer
    x = 860.44

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Double scale
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1.5x scale

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.