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Finding the Fourth Proportional to 555,730.60, 766,908.98 and 301,081.78

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Solution

The fourth proportional to 555,730.60, 766,908.98 and 301,081.78 is: 415,493.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,730.60 : 766,908.98 = 301,081.78 : x
  2. Step 2: Convert to fraction form
    555,730.60/766,908.98 = 301,081.78/x
  3. Step 3: Cross multiply
    555,730.60x = 766,908.98 × 301,081.78
  4. Step 4: Simplify right side
    555,730.60x = 230,902,320,796.38
  5. Step 5: Solve for x
    x = 230,902,320,796.38/555,730.60
  6. Step 6: Final answer
    x = 415,493.26

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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.