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Finding the Fourth Proportional to 542,879.60, 813,090.60 and 321,695.60

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Solution

The fourth proportional to 542,879.60, 813,090.60 and 321,695.60 is: 481,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,879.60 : 813,090.60 = 321,695.60 : x
  2. Step 2: Convert to fraction form
    542,879.60/813,090.60 = 321,695.60/x
  3. Step 3: Cross multiply
    542,879.60x = 813,090.60 × 321,695.60
  4. Step 4: Simplify right side
    542,879.60x = 261,567,668,421.36
  5. Step 5: Solve for x
    x = 261,567,668,421.36/542,879.60
  6. Step 6: Final answer
    x = 481,815.25

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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.