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Finding the Fourth Proportional to 891,649,793.61, 1,230,443,004.90 and 495,198,321.12

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Solution

The fourth proportional to 891,649,793.61, 1,230,443,004.90 and 495,198,321.12 is: 683,354,961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,649,793.61 : 1,230,443,004.90 = 495,198,321.12 : x
  2. Step 2: Convert to fraction form
    891,649,793.61/1,230,443,004.90 = 495,198,321.12/x
  3. Step 3: Cross multiply
    891,649,793.61x = 1,230,443,004.90 × 495,198,321.12
  4. Step 4: Simplify right side
    891,649,793.61x = 609,313,310,260,327,936
  5. Step 5: Solve for x
    x = 609,313,310,260,327,936/891,649,793.61
  6. Step 6: Final answer
    x = 683,354,961.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.