Home / 810,431,361.92-1,215,349,254.24-278,491,933.12

Finding the Fourth Proportional to 810,431,361.92, 1,215,349,254.24 and 278,491,933.12

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Solution

The fourth proportional to 810,431,361.92, 1,215,349,254.24 and 278,491,933.12 is: 417,635,569.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,431,361.92 : 1,215,349,254.24 = 278,491,933.12 : x
  2. Step 2: Convert to fraction form
    810,431,361.92/1,215,349,254.24 = 278,491,933.12/x
  3. Step 3: Cross multiply
    810,431,361.92x = 1,215,349,254.24 × 278,491,933.12
  4. Step 4: Simplify right side
    810,431,361.92x = 338,464,963,229,247,936
  5. Step 5: Solve for x
    x = 338,464,963,229,247,936/810,431,361.92
  6. Step 6: Final answer
    x = 417,635,569.32

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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.