Home / 1,120.50-1,546.17-623.09

Finding the Fourth Proportional to 1,120.50, 1,546.17 and 623.09

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Solution

The fourth proportional to 1,120.50, 1,546.17 and 623.09 is: 859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.50 : 1,546.17 = 623.09 : x
  2. Step 2: Convert to fraction form
    1,120.50/1,546.17 = 623.09/x
  3. Step 3: Cross multiply
    1,120.50x = 1,546.17 × 623.09
  4. Step 4: Simplify right side
    1,120.50x = 963,397.67
  5. Step 5: Solve for x
    x = 963,397.67/1,120.50
  6. Step 6: Final answer
    x = 859.80

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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.