Home / 678,849.35-936,708.03-392,314.14

Finding the Fourth Proportional to 678,849.35, 936,708.03 and 392,314.14

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Solution

The fourth proportional to 678,849.35, 936,708.03 and 392,314.14 is: 541,333.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,849.35 : 936,708.03 = 392,314.14 : x
  2. Step 2: Convert to fraction form
    678,849.35/936,708.03 = 392,314.14/x
  3. Step 3: Cross multiply
    678,849.35x = 936,708.03 × 392,314.14
  4. Step 4: Simplify right side
    678,849.35x = 367,483,805,220.54
  5. Step 5: Solve for x
    x = 367,483,805,220.54/678,849.35
  6. Step 6: Final answer
    x = 541,333.37

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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.