Home / 810,061.36-1,215,087.64-330,287.29

Finding the Fourth Proportional to 810,061.36, 1,215,087.64 and 330,287.29

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Solution

The fourth proportional to 810,061.36, 1,215,087.64 and 330,287.29 is: 495,429.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,061.36 : 1,215,087.64 = 330,287.29 : x
  2. Step 2: Convert to fraction form
    810,061.36/1,215,087.64 = 330,287.29/x
  3. Step 3: Cross multiply
    810,061.36x = 1,215,087.64 × 330,287.29
  4. Step 4: Simplify right side
    810,061.36x = 401,327,999,864.66
  5. Step 5: Solve for x
    x = 401,327,999,864.66/810,061.36
  6. Step 6: Final answer
    x = 495,429.14

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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.