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Finding the Fourth Proportional to 484,872.56, 669,081.24 and 280,858.24

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Solution

The fourth proportional to 484,872.56, 669,081.24 and 280,858.24 is: 387,559.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,872.56 : 669,081.24 = 280,858.24 : x
  2. Step 2: Convert to fraction form
    484,872.56/669,081.24 = 280,858.24/x
  3. Step 3: Cross multiply
    484,872.56x = 669,081.24 × 280,858.24
  4. Step 4: Simplify right side
    484,872.56x = 187,916,979,483.42
  5. Step 5: Solve for x
    x = 187,916,979,483.42/484,872.56
  6. Step 6: Final answer
    x = 387,559.53

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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.