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Finding the Fourth Proportional to 491,524.04, 678,413.80 and 321,659.76

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Solution

The fourth proportional to 491,524.04, 678,413.80 and 321,659.76 is: 443,962.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,524.04 : 678,413.80 = 321,659.76 : x
  2. Step 2: Convert to fraction form
    491,524.04/678,413.80 = 321,659.76/x
  3. Step 3: Cross multiply
    491,524.04x = 678,413.80 × 321,659.76
  4. Step 4: Simplify right side
    491,524.04x = 218,218,420,088.69
  5. Step 5: Solve for x
    x = 218,218,420,088.69/491,524.04
  6. Step 6: Final answer
    x = 443,962.86

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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.