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Finding the Fourth Proportional to 503,922.09, 695,413.45 and 274,478.67

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Solution

The fourth proportional to 503,922.09, 695,413.45 and 274,478.67 is: 378,781.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,922.09 : 695,413.45 = 274,478.67 : x
  2. Step 2: Convert to fraction form
    503,922.09/695,413.45 = 274,478.67/x
  3. Step 3: Cross multiply
    503,922.09x = 695,413.45 × 274,478.67
  4. Step 4: Simplify right side
    503,922.09x = 190,876,158,856.11
  5. Step 5: Solve for x
    x = 190,876,158,856.11/503,922.09
  6. Step 6: Final answer
    x = 378,781.09

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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.