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Finding the Fourth Proportional to 575,878.80, 794,712.20 and 321,229.84

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Solution

The fourth proportional to 575,878.80, 794,712.20 and 321,229.84 is: 443,296.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,878.80 : 794,712.20 = 321,229.84 : x
  2. Step 2: Convert to fraction form
    575,878.80/794,712.20 = 321,229.84/x
  3. Step 3: Cross multiply
    575,878.80x = 794,712.20 × 321,229.84
  4. Step 4: Simplify right side
    575,878.80x = 255,285,272,852.05
  5. Step 5: Solve for x
    x = 255,285,272,852.05/575,878.80
  6. Step 6: Final answer
    x = 443,296.88

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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.