Home / 689,644.32-951,694.23-399,268.13

Finding the Fourth Proportional to 689,644.32, 951,694.23 and 399,268.13

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Solution

The fourth proportional to 689,644.32, 951,694.23 and 399,268.13 is: 550,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,644.32 : 951,694.23 = 399,268.13 : x
  2. Step 2: Convert to fraction form
    689,644.32/951,694.23 = 399,268.13/x
  3. Step 3: Cross multiply
    689,644.32x = 951,694.23 × 399,268.13
  4. Step 4: Simplify right side
    689,644.32x = 379,981,170,785.42
  5. Step 5: Solve for x
    x = 379,981,170,785.42/689,644.32
  6. Step 6: Final answer
    x = 550,981.37

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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.