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Finding the Fourth Proportional to 550,413.23, 825,619.85 and 510,555.15

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Solution

The fourth proportional to 550,413.23, 825,619.85 and 510,555.15 is: 765,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,413.23 : 825,619.85 = 510,555.15 : x
  2. Step 2: Convert to fraction form
    550,413.23/825,619.85 = 510,555.15/x
  3. Step 3: Cross multiply
    550,413.23x = 825,619.85 × 510,555.15
  4. Step 4: Simplify right side
    550,413.23x = 421,524,463,806.95
  5. Step 5: Solve for x
    x = 421,524,463,806.95/550,413.23
  6. Step 6: Final answer
    x = 765,832.73

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Double scale
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Similar ratio
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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.