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Finding the Fourth Proportional to 625,413.60, 863,071.50 and 338,933.68

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Solution

The fourth proportional to 625,413.60, 863,071.50 and 338,933.68 is: 467,728.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,413.60 : 863,071.50 = 338,933.68 : x
  2. Step 2: Convert to fraction form
    625,413.60/863,071.50 = 338,933.68/x
  3. Step 3: Cross multiply
    625,413.60x = 863,071.50 × 338,933.68
  4. Step 4: Simplify right side
    625,413.60x = 292,523,999,598.12
  5. Step 5: Solve for x
    x = 292,523,999,598.12/625,413.60
  6. Step 6: Final answer
    x = 467,728.88

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1.5x scale

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.