Home / 678,905.33-936,889.94-372,982.31

Finding the Fourth Proportional to 678,905.33, 936,889.94 and 372,982.31

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Solution

The fourth proportional to 678,905.33, 936,889.94 and 372,982.31 is: 514,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,905.33 : 936,889.94 = 372,982.31 : x
  2. Step 2: Convert to fraction form
    678,905.33/936,889.94 = 372,982.31/x
  3. Step 3: Cross multiply
    678,905.33x = 936,889.94 × 372,982.31
  4. Step 4: Simplify right side
    678,905.33x = 349,443,367,487.60
  5. Step 5: Solve for x
    x = 349,443,367,487.60/678,905.33
  6. Step 6: Final answer
    x = 514,715.90

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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.