Home / 505,769.36-697,975.80-279,429.44

Finding the Fourth Proportional to 505,769.36, 697,975.80 and 279,429.44

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Solution

The fourth proportional to 505,769.36, 697,975.80 and 279,429.44 is: 385,620.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,769.36 : 697,975.80 = 279,429.44 : x
  2. Step 2: Convert to fraction form
    505,769.36/697,975.80 = 279,429.44/x
  3. Step 3: Cross multiply
    505,769.36x = 697,975.80 × 279,429.44
  4. Step 4: Simplify right side
    505,769.36x = 195,034,986,927.55
  5. Step 5: Solve for x
    x = 195,034,986,927.55/505,769.36
  6. Step 6: Final answer
    x = 385,620.41

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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.