Home / 1,120.46-1,546.21-623.12

Finding the Fourth Proportional to 1,120.46, 1,546.21 and 623.12

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Solution

The fourth proportional to 1,120.46, 1,546.21 and 623.12 is: 859.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.46 : 1,546.21 = 623.12 : x
  2. Step 2: Convert to fraction form
    1,120.46/1,546.21 = 623.12/x
  3. Step 3: Cross multiply
    1,120.46x = 1,546.21 × 623.12
  4. Step 4: Simplify right side
    1,120.46x = 963,474.38
  5. Step 5: Solve for x
    x = 963,474.38/1,120.46
  6. Step 6: Final answer
    x = 859.89

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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.