Home / 1,120,915,605.20-1,681,373,407.80-538,509,413.30

Finding the Fourth Proportional to 1,120,915,605.20, 1,681,373,407.80 and 538,509,413.30

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Solution

The fourth proportional to 1,120,915,605.20, 1,681,373,407.80 and 538,509,413.30 is: 807,764,119.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,915,605.20 : 1,681,373,407.80 = 538,509,413.30 : x
  2. Step 2: Convert to fraction form
    1,120,915,605.20/1,681,373,407.80 = 538,509,413.30/x
  3. Step 3: Cross multiply
    1,120,915,605.20x = 1,681,373,407.80 × 538,509,413.30
  4. Step 4: Simplify right side
    1,120,915,605.20x = 905,435,407,372,599,552
  5. Step 5: Solve for x
    x = 905,435,407,372,599,552/1,120,915,605.20
  6. Step 6: Final answer
    x = 807,764,119.95

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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.