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Finding the Fourth Proportional to 679,131.48, 937,195.92 and 369,031.32

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Solution

The fourth proportional to 679,131.48, 937,195.92 and 369,031.32 is: 509,260.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,131.48 : 937,195.92 = 369,031.32 : x
  2. Step 2: Convert to fraction form
    679,131.48/937,195.92 = 369,031.32/x
  3. Step 3: Cross multiply
    679,131.48x = 937,195.92 × 369,031.32
  4. Step 4: Simplify right side
    679,131.48x = 345,854,647,456.21
  5. Step 5: Solve for x
    x = 345,854,647,456.21/679,131.48
  6. Step 6: Final answer
    x = 509,260.22

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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.