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Finding the Fourth Proportional to 488,335,957.20, 732,503,935.80 and 422,578,990.80

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Solution

The fourth proportional to 488,335,957.20, 732,503,935.80 and 422,578,990.80 is: 633,868,486.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,335,957.20 : 732,503,935.80 = 422,578,990.80 : x
  2. Step 2: Convert to fraction form
    488,335,957.20/732,503,935.80 = 422,578,990.80/x
  3. Step 3: Cross multiply
    488,335,957.20x = 732,503,935.80 × 422,578,990.80
  4. Step 4: Simplify right side
    488,335,957.20x = 309,540,773,947,392,000
  5. Step 5: Solve for x
    x = 309,540,773,947,392,000/488,335,957.20
  6. Step 6: Final answer
    x = 633,868,486.20

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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.