Home / 505,441.12-697,513.20-279,103.84

Finding the Fourth Proportional to 505,441.12, 697,513.20 and 279,103.84

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Solution

The fourth proportional to 505,441.12, 697,513.20 and 279,103.84 is: 385,165.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,441.12 : 697,513.20 = 279,103.84 : x
  2. Step 2: Convert to fraction form
    505,441.12/697,513.20 = 279,103.84/x
  3. Step 3: Cross multiply
    505,441.12x = 697,513.20 × 279,103.84
  4. Step 4: Simplify right side
    505,441.12x = 194,678,612,570.69
  5. Step 5: Solve for x
    x = 194,678,612,570.69/505,441.12
  6. Step 6: Final answer
    x = 385,165.76

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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.