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Finding the Fourth Proportional to 720,751,345.22, 1,081,017,781.51 and 196,161,326.30

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Solution

The fourth proportional to 720,751,345.22, 1,081,017,781.51 and 196,161,326.30 is: 294,212,259.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,751,345.22 : 1,081,017,781.51 = 196,161,326.30 : x
  2. Step 2: Convert to fraction form
    720,751,345.22/1,081,017,781.51 = 196,161,326.30/x
  3. Step 3: Cross multiply
    720,751,345.22x = 1,081,017,781.51 × 196,161,326.30
  4. Step 4: Simplify right side
    720,751,345.22x = 212,053,881,774,885,216
  5. Step 5: Solve for x
    x = 212,053,881,774,885,216/720,751,345.22
  6. Step 6: Final answer
    x = 294,212,259.44

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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.