Home / 18,720,580,806.40-28,080,871,209.60-7,687,015,340.80

Finding the Fourth Proportional to 18,720,580,806.40, 28,080,871,209.60 and 7,687,015,340.80

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Solution

The fourth proportional to 18,720,580,806.40, 28,080,871,209.60 and 7,687,015,340.80 is: 11,530,523,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720,580,806.40 : 28,080,871,209.60 = 7,687,015,340.80 : x
  2. Step 2: Convert to fraction form
    18,720,580,806.40/28,080,871,209.60 = 7,687,015,340.80/x
  3. Step 3: Cross multiply
    18,720,580,806.40x = 28,080,871,209.60 × 7,687,015,340.80
  4. Step 4: Simplify right side
    18,720,580,806.40x = 215,858,087,771,224,244,224
  5. Step 5: Solve for x
    x = 215,858,087,771,224,244,224/18,720,580,806.40
  6. Step 6: Final answer
    x = 11,530,523,011.20

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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.