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Finding the Fourth Proportional to 634,413.60, 951,613.92 and 213,686.64

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Solution

The fourth proportional to 634,413.60, 951,613.92 and 213,686.64 is: 320,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,413.60 : 951,613.92 = 213,686.64 : x
  2. Step 2: Convert to fraction form
    634,413.60/951,613.92 = 213,686.64/x
  3. Step 3: Cross multiply
    634,413.60x = 951,613.92 × 213,686.64
  4. Step 4: Simplify right side
    634,413.60x = 203,347,181,142.03
  5. Step 5: Solve for x
    x = 203,347,181,142.03/634,413.60
  6. Step 6: Final answer
    x = 320,527.78

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1.5x scale

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.