Home / 443,234,987.20-664,852,480.80-259,568,977.60

Finding the Fourth Proportional to 443,234,987.20, 664,852,480.80 and 259,568,977.60

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Solution

The fourth proportional to 443,234,987.20, 664,852,480.80 and 259,568,977.60 is: 389,353,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,234,987.20 : 664,852,480.80 = 259,568,977.60 : x
  2. Step 2: Convert to fraction form
    443,234,987.20/664,852,480.80 = 259,568,977.60/x
  3. Step 3: Cross multiply
    443,234,987.20x = 664,852,480.80 × 259,568,977.60
  4. Step 4: Simplify right side
    443,234,987.20x = 172,575,078,696,079,616
  5. Step 5: Solve for x
    x = 172,575,078,696,079,616/443,234,987.20
  6. Step 6: Final answer
    x = 389,353,466.40

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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.