Home / 678,905.58-936,890.28-372,982.56

Finding the Fourth Proportional to 678,905.58, 936,890.28 and 372,982.56

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Solution

The fourth proportional to 678,905.58, 936,890.28 and 372,982.56 is: 514,716.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,905.58 : 936,890.28 = 372,982.56 : x
  2. Step 2: Convert to fraction form
    678,905.58/936,890.28 = 372,982.56/x
  3. Step 3: Cross multiply
    678,905.58x = 936,890.28 × 372,982.56
  4. Step 4: Simplify right side
    678,905.58x = 349,443,735,073.52
  5. Step 5: Solve for x
    x = 349,443,735,073.52/678,905.58
  6. Step 6: Final answer
    x = 514,716.25

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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.