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Finding the Fourth Proportional to 606,285,953.80, 909,428,930.70 and 218,121,447.40

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Solution

The fourth proportional to 606,285,953.80, 909,428,930.70 and 218,121,447.40 is: 327,182,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,285,953.80 : 909,428,930.70 = 218,121,447.40 : x
  2. Step 2: Convert to fraction form
    606,285,953.80/909,428,930.70 = 218,121,447.40/x
  3. Step 3: Cross multiply
    606,285,953.80x = 909,428,930.70 × 218,121,447.40
  4. Step 4: Simplify right side
    606,285,953.80x = 198,365,954,671,718,304
  5. Step 5: Solve for x
    x = 198,365,954,671,718,304/606,285,953.80
  6. Step 6: Final answer
    x = 327,182,171.10

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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.