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Finding the Fourth Proportional to 628,608,007.20, 942,912,010.80 and 628,608,007.20

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Solution

The fourth proportional to 628,608,007.20, 942,912,010.80 and 628,608,007.20 is: 942,912,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,608,007.20 : 942,912,010.80 = 628,608,007.20 : x
  2. Step 2: Convert to fraction form
    628,608,007.20/942,912,010.80 = 628,608,007.20/x
  3. Step 3: Cross multiply
    628,608,007.20x = 942,912,010.80 × 628,608,007.20
  4. Step 4: Simplify right side
    628,608,007.20x = 592,722,040,073,932,928
  5. Step 5: Solve for x
    x = 592,722,040,073,932,928/628,608,007.20
  6. Step 6: Final answer
    x = 942,912,010.80

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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.