Home / 18,720,580,802.40-28,080,871,203.60-7,687,015,336.80

Finding the Fourth Proportional to 18,720,580,802.40, 28,080,871,203.60 and 7,687,015,336.80

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Solution

The fourth proportional to 18,720,580,802.40, 28,080,871,203.60 and 7,687,015,336.80 is: 11,530,523,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720,580,802.40 : 28,080,871,203.60 = 7,687,015,336.80 : x
  2. Step 2: Convert to fraction form
    18,720,580,802.40/28,080,871,203.60 = 7,687,015,336.80/x
  3. Step 3: Cross multiply
    18,720,580,802.40x = 28,080,871,203.60 × 7,687,015,336.80
  4. Step 4: Simplify right side
    18,720,580,802.40x = 215,858,087,612,778,676,224
  5. Step 5: Solve for x
    x = 215,858,087,612,778,676,224/18,720,580,802.40
  6. Step 6: Final answer
    x = 11,530,523,005.20

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1.5x scale

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.