Home / 505,759.11-697,961.66-279,419.19

Finding the Fourth Proportional to 505,759.11, 697,961.66 and 279,419.19

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Solution

The fourth proportional to 505,759.11, 697,961.66 and 279,419.19 is: 385,606.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,759.11 : 697,961.66 = 279,419.19 : x
  2. Step 2: Convert to fraction form
    505,759.11/697,961.66 = 279,419.19/x
  3. Step 3: Cross multiply
    505,759.11x = 697,961.66 × 279,419.19
  4. Step 4: Simplify right side
    505,759.11x = 195,023,880,291.16
  5. Step 5: Solve for x
    x = 195,023,880,291.16/505,759.11
  6. Step 6: Final answer
    x = 385,606.26

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Double scale
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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.