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Finding the Fourth Proportional to 479,488.80, 720,010.80 and 322,413.60

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Solution

The fourth proportional to 479,488.80, 720,010.80 and 322,413.60 is: 484,143.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,488.80 : 720,010.80 = 322,413.60 : x
  2. Step 2: Convert to fraction form
    479,488.80/720,010.80 = 322,413.60/x
  3. Step 3: Cross multiply
    479,488.80x = 720,010.80 × 322,413.60
  4. Step 4: Simplify right side
    479,488.80x = 232,141,274,066.88
  5. Step 5: Solve for x
    x = 232,141,274,066.88/479,488.80
  6. Step 6: Final answer
    x = 484,143.27

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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.