Home / 767,111.04-1,149,266.88-428,388.48

Finding the Fourth Proportional to 767,111.04, 1,149,266.88 and 428,388.48

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Solution

The fourth proportional to 767,111.04, 1,149,266.88 and 428,388.48 is: 641,801.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,111.04 : 1,149,266.88 = 428,388.48 : x
  2. Step 2: Convert to fraction form
    767,111.04/1,149,266.88 = 428,388.48/x
  3. Step 3: Cross multiply
    767,111.04x = 1,149,266.88 × 428,388.48
  4. Step 4: Simplify right side
    767,111.04x = 492,332,691,837.54
  5. Step 5: Solve for x
    x = 492,332,691,837.54/767,111.04
  6. Step 6: Final answer
    x = 641,801.08

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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.