Home / 689,786.43-951,898.39-383,857.57

Finding the Fourth Proportional to 689,786.43, 951,898.39 and 383,857.57

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Solution

The fourth proportional to 689,786.43, 951,898.39 and 383,857.57 is: 529,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,786.43 : 951,898.39 = 383,857.57 : x
  2. Step 2: Convert to fraction form
    689,786.43/951,898.39 = 383,857.57/x
  3. Step 3: Cross multiply
    689,786.43x = 951,898.39 × 383,857.57
  4. Step 4: Simplify right side
    689,786.43x = 365,393,402,872.31
  5. Step 5: Solve for x
    x = 365,393,402,872.31/689,786.43
  6. Step 6: Final answer
    x = 529,719.62

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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.