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Finding the Fourth Proportional to 1,090,913,785.02, 1,505,015,345.97 and 805,489,355.43

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Solution

The fourth proportional to 1,090,913,785.02, 1,505,015,345.97 and 805,489,355.43 is: 1,111,246,239.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,913,785.02 : 1,505,015,345.97 = 805,489,355.43 : x
  2. Step 2: Convert to fraction form
    1,090,913,785.02/1,505,015,345.97 = 805,489,355.43/x
  3. Step 3: Cross multiply
    1,090,913,785.02x = 1,505,015,345.97 × 805,489,355.43
  4. Step 4: Simplify right side
    1,090,913,785.02x = 1,212,273,840,937,633,792
  5. Step 5: Solve for x
    x = 1,212,273,840,937,633,792/1,090,913,785.02
  6. Step 6: Final answer
    x = 1,111,246,239.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.