Home / 695,783.08-960,153.78-393,977.80

Finding the Fourth Proportional to 695,783.08, 960,153.78 and 393,977.80

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Solution

The fourth proportional to 695,783.08, 960,153.78 and 393,977.80 is: 543,674.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,783.08 : 960,153.78 = 393,977.80 : x
  2. Step 2: Convert to fraction form
    695,783.08/960,153.78 = 393,977.80/x
  3. Step 3: Cross multiply
    695,783.08x = 960,153.78 × 393,977.80
  4. Step 4: Simplify right side
    695,783.08x = 378,279,273,906.08
  5. Step 5: Solve for x
    x = 378,279,273,906.08/695,783.08
  6. Step 6: Final answer
    x = 543,674.15

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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.