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Finding the Fourth Proportional to 663,552,019.20, 995,328,028.80 and 372,119,980.80

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Solution

The fourth proportional to 663,552,019.20, 995,328,028.80 and 372,119,980.80 is: 558,179,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,019.20 : 995,328,028.80 = 372,119,980.80 : x
  2. Step 2: Convert to fraction form
    663,552,019.20/995,328,028.80 = 372,119,980.80/x
  3. Step 3: Cross multiply
    663,552,019.20x = 995,328,028.80 × 372,119,980.80
  4. Step 4: Simplify right side
    663,552,019.20x = 370,381,446,966,757,824
  5. Step 5: Solve for x
    x = 370,381,446,966,757,824/663,552,019.20
  6. Step 6: Final answer
    x = 558,179,971.20

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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.