Home / 505,760.11-697,963.04-279,420.19

Finding the Fourth Proportional to 505,760.11, 697,963.04 and 279,420.19

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Solution

The fourth proportional to 505,760.11, 697,963.04 and 279,420.19 is: 385,607.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,760.11 : 697,963.04 = 279,420.19 : x
  2. Step 2: Convert to fraction form
    505,760.11/697,963.04 = 279,420.19/x
  3. Step 3: Cross multiply
    505,760.11x = 697,963.04 × 279,420.19
  4. Step 4: Simplify right side
    505,760.11x = 195,024,965,249.78
  5. Step 5: Solve for x
    x = 195,024,965,249.78/505,760.11
  6. Step 6: Final answer
    x = 385,607.65

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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.