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Finding the Fourth Proportional to 616,697.78, 851,305.26 and 375,057.96

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Solution

The fourth proportional to 616,697.78, 851,305.26 and 375,057.96 is: 517,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,697.78 : 851,305.26 = 375,057.96 : x
  2. Step 2: Convert to fraction form
    616,697.78/851,305.26 = 375,057.96/x
  3. Step 3: Cross multiply
    616,697.78x = 851,305.26 × 375,057.96
  4. Step 4: Simplify right side
    616,697.78x = 319,288,814,152.87
  5. Step 5: Solve for x
    x = 319,288,814,152.87/616,697.78
  6. Step 6: Final answer
    x = 517,739.53

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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.