Home / 756,122.85-1,133,003.09-643,339.26

Finding the Fourth Proportional to 756,122.85, 1,133,003.09 and 643,339.26

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Solution

The fourth proportional to 756,122.85, 1,133,003.09 and 643,339.26 is: 964,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,122.85 : 1,133,003.09 = 643,339.26 : x
  2. Step 2: Convert to fraction form
    756,122.85/1,133,003.09 = 643,339.26/x
  3. Step 3: Cross multiply
    756,122.85x = 1,133,003.09 × 643,339.26
  4. Step 4: Simplify right side
    756,122.85x = 728,905,371,106.66
  5. Step 5: Solve for x
    x = 728,905,371,106.66/756,122.85
  6. Step 6: Final answer
    x = 964,003.89

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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.