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Finding the Fourth Proportional to 663,552,999.60, 995,329,499.40 and 203,487,514.80

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Solution

The fourth proportional to 663,552,999.60, 995,329,499.40 and 203,487,514.80 is: 305,231,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,999.60 : 995,329,499.40 = 203,487,514.80 : x
  2. Step 2: Convert to fraction form
    663,552,999.60/995,329,499.40 = 203,487,514.80/x
  3. Step 3: Cross multiply
    663,552,999.60x = 995,329,499.40 × 203,487,514.80
  4. Step 4: Simplify right side
    663,552,999.60x = 202,537,126,240,034,112
  5. Step 5: Solve for x
    x = 202,537,126,240,034,112/663,552,999.60
  6. Step 6: Final answer
    x = 305,231,272.20

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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.