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Finding the Fourth Proportional to 505,381.05, 697,427.34 and 275,940.33

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Solution

The fourth proportional to 505,381.05, 697,427.34 and 275,940.33 is: 380,798.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,381.05 : 697,427.34 = 275,940.33 : x
  2. Step 2: Convert to fraction form
    505,381.05/697,427.34 = 275,940.33/x
  3. Step 3: Cross multiply
    505,381.05x = 697,427.34 × 275,940.33
  4. Step 4: Simplify right side
    505,381.05x = 192,448,330,350.62
  5. Step 5: Solve for x
    x = 192,448,330,350.62/505,381.05
  6. Step 6: Final answer
    x = 380,798.47

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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.