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Finding the Fourth Proportional to 505,072.73, 697,015.07 and 275,644.77

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Solution

The fourth proportional to 505,072.73, 697,015.07 and 275,644.77 is: 380,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,072.73 : 697,015.07 = 275,644.77 : x
  2. Step 2: Convert to fraction form
    505,072.73/697,015.07 = 275,644.77/x
  3. Step 3: Cross multiply
    505,072.73x = 697,015.07 × 275,644.77
  4. Step 4: Simplify right side
    505,072.73x = 192,128,558,656.68
  5. Step 5: Solve for x
    x = 192,128,558,656.68/505,072.73
  6. Step 6: Final answer
    x = 380,397.81

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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.