Home / 678,819.62-936,667.04-392,284.41

Finding the Fourth Proportional to 678,819.62, 936,667.04 and 392,284.41

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Solution

The fourth proportional to 678,819.62, 936,667.04 and 392,284.41 is: 541,292.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,819.62 : 936,667.04 = 392,284.41 : x
  2. Step 2: Convert to fraction form
    678,819.62/936,667.04 = 392,284.41/x
  3. Step 3: Cross multiply
    678,819.62x = 936,667.04 × 392,284.41
  4. Step 4: Simplify right side
    678,819.62x = 367,439,875,191.42
  5. Step 5: Solve for x
    x = 367,439,875,191.42/678,819.62
  6. Step 6: Final answer
    x = 541,292.37

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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.