Home / 808,015.40-1,212,015.60-309,379.40

Finding the Fourth Proportional to 808,015.40, 1,212,015.60 and 309,379.40

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Solution

The fourth proportional to 808,015.40, 1,212,015.60 and 309,379.40 is: 464,066.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,015.40 : 1,212,015.60 = 309,379.40 : x
  2. Step 2: Convert to fraction form
    808,015.40/1,212,015.60 = 309,379.40/x
  3. Step 3: Cross multiply
    808,015.40x = 1,212,015.60 × 309,379.40
  4. Step 4: Simplify right side
    808,015.40x = 374,972,659,118.64
  5. Step 5: Solve for x
    x = 374,972,659,118.64/808,015.40
  6. Step 6: Final answer
    x = 464,066.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.