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Finding the Fourth Proportional to 505,073.73, 697,016.45 and 275,645.78

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Solution

The fourth proportional to 505,073.73, 697,016.45 and 275,645.78 is: 380,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,073.73 : 697,016.45 = 275,645.78 : x
  2. Step 2: Convert to fraction form
    505,073.73/697,016.45 = 275,645.78/x
  3. Step 3: Cross multiply
    505,073.73x = 697,016.45 × 275,645.78
  4. Step 4: Simplify right side
    505,073.73x = 192,129,638,169.77
  5. Step 5: Solve for x
    x = 192,129,638,169.77/505,073.73
  6. Step 6: Final answer
    x = 380,399.19

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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.