Home / 765,940.25-1,056,988.64-421,769.03

Finding the Fourth Proportional to 765,940.25, 1,056,988.64 and 421,769.03

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Solution

The fourth proportional to 765,940.25, 1,056,988.64 and 421,769.03 is: 582,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,940.25 : 1,056,988.64 = 421,769.03 : x
  2. Step 2: Convert to fraction form
    765,940.25/1,056,988.64 = 421,769.03/x
  3. Step 3: Cross multiply
    765,940.25x = 1,056,988.64 × 421,769.03
  4. Step 4: Simplify right side
    765,940.25x = 445,805,069,183.30
  5. Step 5: Solve for x
    x = 445,805,069,183.30/765,940.25
  6. Step 6: Final answer
    x = 582,036.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.