Home / 810,469.11-1,215,703.64-305,143.45

Finding the Fourth Proportional to 810,469.11, 1,215,703.64 and 305,143.45

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Solution

The fourth proportional to 810,469.11, 1,215,703.64 and 305,143.45 is: 457,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,469.11 : 1,215,703.64 = 305,143.45 : x
  2. Step 2: Convert to fraction form
    810,469.11/1,215,703.64 = 305,143.45/x
  3. Step 3: Cross multiply
    810,469.11x = 1,215,703.64 × 305,143.45
  4. Step 4: Simplify right side
    810,469.11x = 370,964,001,361.44
  5. Step 5: Solve for x
    x = 370,964,001,361.44/810,469.11
  6. Step 6: Final answer
    x = 457,715.17

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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.