Home / 641,786.42-885,631.55-351,342.29

Finding the Fourth Proportional to 641,786.42, 885,631.55 and 351,342.29

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Solution

The fourth proportional to 641,786.42, 885,631.55 and 351,342.29 is: 484,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,786.42 : 885,631.55 = 351,342.29 : x
  2. Step 2: Convert to fraction form
    641,786.42/885,631.55 = 351,342.29/x
  3. Step 3: Cross multiply
    641,786.42x = 885,631.55 × 351,342.29
  4. Step 4: Simplify right side
    641,786.42x = 311,159,816,873.25
  5. Step 5: Solve for x
    x = 311,159,816,873.25/641,786.42
  6. Step 6: Final answer
    x = 484,833.91

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Double scale
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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.