Home / 678,859.35-936,721.83-392,324.14

Finding the Fourth Proportional to 678,859.35, 936,721.83 and 392,324.14

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Solution

The fourth proportional to 678,859.35, 936,721.83 and 392,324.14 is: 541,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,859.35 : 936,721.83 = 392,324.14 : x
  2. Step 2: Convert to fraction form
    678,859.35/936,721.83 = 392,324.14/x
  3. Step 3: Cross multiply
    678,859.35x = 936,721.83 × 392,324.14
  4. Step 4: Simplify right side
    678,859.35x = 367,498,586,373.98
  5. Step 5: Solve for x
    x = 367,498,586,373.98/678,859.35
  6. Step 6: Final answer
    x = 541,347.17

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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.