Home / 1,328,542,980.30-1,992,814,470.45-345,967,620.30

Finding the Fourth Proportional to 1,328,542,980.30, 1,992,814,470.45 and 345,967,620.30

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Solution

The fourth proportional to 1,328,542,980.30, 1,992,814,470.45 and 345,967,620.30 is: 518,951,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,542,980.30 : 1,992,814,470.45 = 345,967,620.30 : x
  2. Step 2: Convert to fraction form
    1,328,542,980.30/1,992,814,470.45 = 345,967,620.30/x
  3. Step 3: Cross multiply
    1,328,542,980.30x = 1,992,814,470.45 × 345,967,620.30
  4. Step 4: Simplify right side
    1,328,542,980.30x = 689,449,280,040,991,232
  5. Step 5: Solve for x
    x = 689,449,280,040,991,232/1,328,542,980.30
  6. Step 6: Final answer
    x = 518,951,430.45

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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.