Home / 1,120.43-1,546.13-623.05

Finding the Fourth Proportional to 1,120.43, 1,546.13 and 623.05

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Solution

The fourth proportional to 1,120.43, 1,546.13 and 623.05 is: 859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.43 : 1,546.13 = 623.05 : x
  2. Step 2: Convert to fraction form
    1,120.43/1,546.13 = 623.05/x
  3. Step 3: Cross multiply
    1,120.43x = 1,546.13 × 623.05
  4. Step 4: Simplify right side
    1,120.43x = 963,313.18
  5. Step 5: Solve for x
    x = 963,313.18/1,120.43
  6. Step 6: Final answer
    x = 859.77

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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.