Home / 756,135.10-1,133,021.44-643,351.51

Finding the Fourth Proportional to 756,135.10, 1,133,021.44 and 643,351.51

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Solution

The fourth proportional to 756,135.10, 1,133,021.44 and 643,351.51 is: 964,022.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,135.10 : 1,133,021.44 = 643,351.51 : x
  2. Step 2: Convert to fraction form
    756,135.10/1,133,021.44 = 643,351.51/x
  3. Step 3: Cross multiply
    756,135.10x = 1,133,021.44 × 643,351.51
  4. Step 4: Simplify right side
    756,135.10x = 728,931,054,286.37
  5. Step 5: Solve for x
    x = 728,931,054,286.37/756,135.10
  6. Step 6: Final answer
    x = 964,022.24

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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.