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Finding the Fourth Proportional to 633,413.52, 873,779.40 and 391,618.80

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Solution

The fourth proportional to 633,413.52, 873,779.40 and 391,618.80 is: 540,229.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,413.52 : 873,779.40 = 391,618.80 : x
  2. Step 2: Convert to fraction form
    633,413.52/873,779.40 = 391,618.80/x
  3. Step 3: Cross multiply
    633,413.52x = 873,779.40 × 391,618.80
  4. Step 4: Simplify right side
    633,413.52x = 342,188,440,092.72
  5. Step 5: Solve for x
    x = 342,188,440,092.72/633,413.52
  6. Step 6: Final answer
    x = 540,229.14

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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.