Home / 638,349.56-880,922.18-351,874.42

Finding the Fourth Proportional to 638,349.56, 880,922.18 and 351,874.42

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Solution

The fourth proportional to 638,349.56, 880,922.18 and 351,874.42 is: 485,586.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,349.56 : 880,922.18 = 351,874.42 : x
  2. Step 2: Convert to fraction form
    638,349.56/880,922.18 = 351,874.42/x
  3. Step 3: Cross multiply
    638,349.56x = 880,922.18 × 351,874.42
  4. Step 4: Simplify right side
    638,349.56x = 309,973,981,152.64
  5. Step 5: Solve for x
    x = 309,973,981,152.64/638,349.56
  6. Step 6: Final answer
    x = 485,586.58

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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.