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Finding the Fourth Proportional to 891,649,782.58, 1,230,442,989.76 and 495,198,310.09

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Solution

The fourth proportional to 891,649,782.58, 1,230,442,989.76 and 495,198,310.09 is: 683,354,946.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,649,782.58 : 1,230,442,989.76 = 495,198,310.09 : x
  2. Step 2: Convert to fraction form
    891,649,782.58/1,230,442,989.76 = 495,198,310.09/x
  3. Step 3: Cross multiply
    891,649,782.58x = 1,230,442,989.76 × 495,198,310.09
  4. Step 4: Simplify right side
    891,649,782.58x = 609,313,289,182,610,944
  5. Step 5: Solve for x
    x = 609,313,289,182,610,944/891,649,782.58
  6. Step 6: Final answer
    x = 683,354,946.18

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