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Finding the Fourth Proportional to 646,892.26, 892,717.42 and 356,514.45

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Solution

The fourth proportional to 646,892.26, 892,717.42 and 356,514.45 is: 491,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,892.26 : 892,717.42 = 356,514.45 : x
  2. Step 2: Convert to fraction form
    646,892.26/892,717.42 = 356,514.45/x
  3. Step 3: Cross multiply
    646,892.26x = 892,717.42 × 356,514.45
  4. Step 4: Simplify right side
    646,892.26x = 318,266,657,835.50
  5. Step 5: Solve for x
    x = 318,266,657,835.50/646,892.26
  6. Step 6: Final answer
    x = 491,993.30

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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.