Home / 427,171,808.20-640,608,413.10-222,631,904.20

Finding the Fourth Proportional to 427,171,808.20, 640,608,413.10 and 222,631,904.20

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Solution

The fourth proportional to 427,171,808.20, 640,608,413.10 and 222,631,904.20 is: 333,870,045.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,171,808.20 : 640,608,413.10 = 222,631,904.20 : x
  2. Step 2: Convert to fraction form
    427,171,808.20/640,608,413.10 = 222,631,904.20/x
  3. Step 3: Cross multiply
    427,171,808.20x = 640,608,413.10 × 222,631,904.20
  4. Step 4: Simplify right side
    427,171,808.20x = 142,619,870,854,993,216
  5. Step 5: Solve for x
    x = 142,619,870,854,993,216/427,171,808.20
  6. Step 6: Final answer
    x = 333,870,045.07

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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.