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Finding the Fourth Proportional to 790,189, 1,090,343.50 and 479,930.12

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Solution

The fourth proportional to 790,189, 1,090,343.50 and 479,930.12 is: 662,232.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,189 : 1,090,343.50 = 479,930.12 : x
  2. Step 2: Convert to fraction form
    790,189/1,090,343.50 = 479,930.12/x
  3. Step 3: Cross multiply
    790,189x = 1,090,343.50 × 479,930.12
  4. Step 4: Simplify right side
    790,189x = 523,288,686,796.22
  5. Step 5: Solve for x
    x = 523,288,686,796.22/790,189
  6. Step 6: Final answer
    x = 662,232.31

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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.