Home / 684,287,997.20-1,026,431,995.80-412,190,205.20

Finding the Fourth Proportional to 684,287,997.20, 1,026,431,995.80 and 412,190,205.20

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Solution

The fourth proportional to 684,287,997.20, 1,026,431,995.80 and 412,190,205.20 is: 618,285,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,287,997.20 : 1,026,431,995.80 = 412,190,205.20 : x
  2. Step 2: Convert to fraction form
    684,287,997.20/1,026,431,995.80 = 412,190,205.20/x
  3. Step 3: Cross multiply
    684,287,997.20x = 1,026,431,995.80 × 412,190,205.20
  4. Step 4: Simplify right side
    684,287,997.20x = 423,085,214,972,647,488
  5. Step 5: Solve for x
    x = 423,085,214,972,647,488/684,287,997.20
  6. Step 6: Final answer
    x = 618,285,307.80

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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.