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Finding the Fourth Proportional to 636,616,646.60, 955,067,392.74 and 193,993,967.84

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Solution

The fourth proportional to 636,616,646.60, 955,067,392.74 and 193,993,967.84 is: 291,034,351.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,616,646.60 : 955,067,392.74 = 193,993,967.84 : x
  2. Step 2: Convert to fraction form
    636,616,646.60/955,067,392.74 = 193,993,967.84/x
  3. Step 3: Cross multiply
    636,616,646.60x = 955,067,392.74 × 193,993,967.84
  4. Step 4: Simplify right side
    636,616,646.60x = 185,277,313,072,236,224
  5. Step 5: Solve for x
    x = 185,277,313,072,236,224/636,616,646.60
  6. Step 6: Final answer
    x = 291,034,351.77

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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.