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Finding the Fourth Proportional to 575,335.78, 861,953.91 and 321,293.86

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Solution

The fourth proportional to 575,335.78, 861,953.91 and 321,293.86 is: 481,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,335.78 : 861,953.91 = 321,293.86 : x
  2. Step 2: Convert to fraction form
    575,335.78/861,953.91 = 321,293.86/x
  3. Step 3: Cross multiply
    575,335.78x = 861,953.91 × 321,293.86
  4. Step 4: Simplify right side
    575,335.78x = 276,940,498,885.99
  5. Step 5: Solve for x
    x = 276,940,498,885.99/575,335.78
  6. Step 6: Final answer
    x = 481,354.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.