Home / 851,128.62-1,174,557.20-469,161.78

Finding the Fourth Proportional to 851,128.62, 1,174,557.20 and 469,161.78

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Solution

The fourth proportional to 851,128.62, 1,174,557.20 and 469,161.78 is: 647,443.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,128.62 : 1,174,557.20 = 469,161.78 : x
  2. Step 2: Convert to fraction form
    851,128.62/1,174,557.20 = 469,161.78/x
  3. Step 3: Cross multiply
    851,128.62x = 1,174,557.20 × 469,161.78
  4. Step 4: Simplify right side
    851,128.62x = 551,057,346,663.82
  5. Step 5: Solve for x
    x = 551,057,346,663.82/851,128.62
  6. Step 6: Final answer
    x = 647,443.09

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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.