Home / 505,259.25-697,257.77-278,904.75

Finding the Fourth Proportional to 505,259.25, 697,257.77 and 278,904.75

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Solution

The fourth proportional to 505,259.25, 697,257.77 and 278,904.75 is: 384,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,259.25 : 697,257.77 = 278,904.75 : x
  2. Step 2: Convert to fraction form
    505,259.25/697,257.77 = 278,904.75/x
  3. Step 3: Cross multiply
    505,259.25x = 697,257.77 × 278,904.75
  4. Step 4: Simplify right side
    505,259.25x = 194,468,502,632.88
  5. Step 5: Solve for x
    x = 194,468,502,632.88/505,259.25
  6. Step 6: Final answer
    x = 384,888.56

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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.