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Finding the Fourth Proportional to 18,978,650,084.16, 28,447,903,752.69 and 7,019,216,682.60

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Solution

The fourth proportional to 18,978,650,084.16, 28,447,903,752.69 and 7,019,216,682.60 is: 10,521,401,665.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978,650,084.16 : 28,447,903,752.69 = 7,019,216,682.60 : x
  2. Step 2: Convert to fraction form
    18,978,650,084.16/28,447,903,752.69 = 7,019,216,682.60/x
  3. Step 3: Cross multiply
    18,978,650,084.16x = 28,447,903,752.69 × 7,019,216,682.60
  4. Step 4: Simplify right side
    18,978,650,084.16x = 199,682,000,605,880,778,752
  5. Step 5: Solve for x
    x = 199,682,000,605,880,778,752/18,978,650,084.16
  6. Step 6: Final answer
    x = 10,521,401,665.58

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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.