Home / 18,858,528,191.80-28,287,792,287.70-7,813,373,375.80

Finding the Fourth Proportional to 18,858,528,191.80, 28,287,792,287.70 and 7,813,373,375.80

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Solution

The fourth proportional to 18,858,528,191.80, 28,287,792,287.70 and 7,813,373,375.80 is: 11,720,060,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858,528,191.80 : 28,287,792,287.70 = 7,813,373,375.80 : x
  2. Step 2: Convert to fraction form
    18,858,528,191.80/28,287,792,287.70 = 7,813,373,375.80/x
  3. Step 3: Cross multiply
    18,858,528,191.80x = 28,287,792,287.70 × 7,813,373,375.80
  4. Step 4: Simplify right side
    18,858,528,191.80x = 221,023,083,120,875,765,760
  5. Step 5: Solve for x
    x = 221,023,083,120,875,765,760/18,858,528,191.80
  6. Step 6: Final answer
    x = 11,720,060,063.70

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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.