Home / 678,868.41-936,734.27-392,333.16

Finding the Fourth Proportional to 678,868.41, 936,734.27 and 392,333.16

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Solution

The fourth proportional to 678,868.41, 936,734.27 and 392,333.16 is: 541,359.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,868.41 : 936,734.27 = 392,333.16 : x
  2. Step 2: Convert to fraction form
    678,868.41/936,734.27 = 392,333.16/x
  3. Step 3: Cross multiply
    678,868.41x = 936,734.27 × 392,333.16
  4. Step 4: Simplify right side
    678,868.41x = 367,511,914,267.73
  5. Step 5: Solve for x
    x = 367,511,914,267.73/678,868.41
  6. Step 6: Final answer
    x = 541,359.58

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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.