Home / 1,043.30-1,439.10-623.36

Finding the Fourth Proportional to 1,043.30, 1,439.10 and 623.36

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Solution

The fourth proportional to 1,043.30, 1,439.10 and 623.36 is: 859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.30 : 1,439.10 = 623.36 : x
  2. Step 2: Convert to fraction form
    1,043.30/1,439.10 = 623.36/x
  3. Step 3: Cross multiply
    1,043.30x = 1,439.10 × 623.36
  4. Step 4: Simplify right side
    1,043.30x = 897,077.38
  5. Step 5: Solve for x
    x = 897,077.38/1,043.30
  6. Step 6: Final answer
    x = 859.85

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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.