Home / 678,385.19-936,173.42-372,481.39

Finding the Fourth Proportional to 678,385.19, 936,173.42 and 372,481.39

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Solution

The fourth proportional to 678,385.19, 936,173.42 and 372,481.39 is: 514,025.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,385.19 : 936,173.42 = 372,481.39 : x
  2. Step 2: Convert to fraction form
    678,385.19/936,173.42 = 372,481.39/x
  3. Step 3: Cross multiply
    678,385.19x = 936,173.42 × 372,481.39
  4. Step 4: Simplify right side
    678,385.19x = 348,707,174,296.50
  5. Step 5: Solve for x
    x = 348,707,174,296.50/678,385.19
  6. Step 6: Final answer
    x = 514,025.34

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Double scale
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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.