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Finding the Fourth Proportional to 637,691.41, 879,996.16 and 347,296.42

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Solution

The fourth proportional to 637,691.41, 879,996.16 and 347,296.42 is: 479,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,691.41 : 879,996.16 = 347,296.42 : x
  2. Step 2: Convert to fraction form
    637,691.41/879,996.16 = 347,296.42/x
  3. Step 3: Cross multiply
    637,691.41x = 879,996.16 × 347,296.42
  4. Step 4: Simplify right side
    637,691.41x = 305,619,515,981.75
  5. Step 5: Solve for x
    x = 305,619,515,981.75/637,691.41
  6. Step 6: Final answer
    x = 479,259.26

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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.