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Finding the Fourth Proportional to 505,015.38, 696,920.85 and 323,727.21

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Solution

The fourth proportional to 505,015.38, 696,920.85 and 323,727.21 is: 446,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,015.38 : 696,920.85 = 323,727.21 : x
  2. Step 2: Convert to fraction form
    505,015.38/696,920.85 = 323,727.21/x
  3. Step 3: Cross multiply
    505,015.38x = 696,920.85 × 323,727.21
  4. Step 4: Simplify right side
    505,015.38x = 225,612,242,361.33
  5. Step 5: Solve for x
    x = 225,612,242,361.33/505,015.38
  6. Step 6: Final answer
    x = 446,743.31

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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.