Home / 505,986.16-698,219.04-279,631.12

Finding the Fourth Proportional to 505,986.16, 698,219.04 and 279,631.12

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Solution

The fourth proportional to 505,986.16, 698,219.04 and 279,631.12 is: 385,867.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,986.16 : 698,219.04 = 279,631.12 : x
  2. Step 2: Convert to fraction form
    505,986.16/698,219.04 = 279,631.12/x
  3. Step 3: Cross multiply
    505,986.16x = 698,219.04 × 279,631.12
  4. Step 4: Simplify right side
    505,986.16x = 195,243,772,160.53
  5. Step 5: Solve for x
    x = 195,243,772,160.53/505,986.16
  6. Step 6: Final answer
    x = 385,867.81

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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.