Home / 1,238,719.88-1,857,633.58-428,884.36

Finding the Fourth Proportional to 1,238,719.88, 1,857,633.58 and 428,884.36

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Solution

The fourth proportional to 1,238,719.88, 1,857,633.58 and 428,884.36 is: 643,172.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,719.88 : 1,857,633.58 = 428,884.36 : x
  2. Step 2: Convert to fraction form
    1,238,719.88/1,857,633.58 = 428,884.36/x
  3. Step 3: Cross multiply
    1,238,719.88x = 1,857,633.58 × 428,884.36
  4. Step 4: Simplify right side
    1,238,719.88x = 796,709,989,072.81
  5. Step 5: Solve for x
    x = 796,709,989,072.81/1,238,719.88
  6. Step 6: Final answer
    x = 643,172.04

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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.