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Finding the Fourth Proportional to 663,553,480.80, 995,330,221.20 and 300,059,695.20

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Solution

The fourth proportional to 663,553,480.80, 995,330,221.20 and 300,059,695.20 is: 450,089,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,553,480.80 : 995,330,221.20 = 300,059,695.20 : x
  2. Step 2: Convert to fraction form
    663,553,480.80/995,330,221.20 = 300,059,695.20/x
  3. Step 3: Cross multiply
    663,553,480.80x = 995,330,221.20 × 300,059,695.20
  4. Step 4: Simplify right side
    663,553,480.80x = 298,658,482,796,620,608
  5. Step 5: Solve for x
    x = 298,658,482,796,620,608/663,553,480.80
  6. Step 6: Final answer
    x = 450,089,542.80

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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.