Home / 643,583,155,413.38-965,039,528,092.95-303,531,029,289.72

Finding the Fourth Proportional to 643,583,155,413.38, 965,039,528,092.95 and 303,531,029,289.72

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Solution

The fourth proportional to 643,583,155,413.38, 965,039,528,092.95 and 303,531,029,289.72 is: 455,138,452,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,583,155,413.38 : 965,039,528,092.95 = 303,531,029,289.72 : x
  2. Step 2: Convert to fraction form
    643,583,155,413.38/965,039,528,092.95 = 303,531,029,289.72/x
  3. Step 3: Cross multiply
    643,583,155,413.38x = 965,039,528,092.95 × 303,531,029,289.72
  4. Step 4: Simplify right side
    643,583,155,413.38x = 292,919,441,267,318,723,706,880
  5. Step 5: Solve for x
    x = 292,919,441,267,318,723,706,880/643,583,155,413.38
  6. Step 6: Final answer
    x = 455,138,452,278.44

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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.