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Finding the Fourth Proportional to 555,442.71, 766,509.39 and 300,793.83

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Solution

The fourth proportional to 555,442.71, 766,509.39 and 300,793.83 is: 415,094.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,442.71 : 766,509.39 = 300,793.83 : x
  2. Step 2: Convert to fraction form
    555,442.71/766,509.39 = 300,793.83/x
  3. Step 3: Cross multiply
    555,442.71x = 766,509.39 × 300,793.83
  4. Step 4: Simplify right side
    555,442.71x = 230,561,295,149.06
  5. Step 5: Solve for x
    x = 230,561,295,149.06/555,442.71
  6. Step 6: Final answer
    x = 415,094.65

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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.