Home / 746,761,891.40-1,120,142,837.10-644,641,238.60

Finding the Fourth Proportional to 746,761,891.40, 1,120,142,837.10 and 644,641,238.60

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Solution

The fourth proportional to 746,761,891.40, 1,120,142,837.10 and 644,641,238.60 is: 966,961,857.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,761,891.40 : 1,120,142,837.10 = 644,641,238.60 : x
  2. Step 2: Convert to fraction form
    746,761,891.40/1,120,142,837.10 = 644,641,238.60/x
  3. Step 3: Cross multiply
    746,761,891.40x = 1,120,142,837.10 × 644,641,238.60
  4. Step 4: Simplify right side
    746,761,891.40x = 722,090,265,917,062,016
  5. Step 5: Solve for x
    x = 722,090,265,917,062,016/746,761,891.40
  6. Step 6: Final answer
    x = 966,961,857.90

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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.