Home / 512,493,743.40-768,740,615.10-426,329,442.60

Finding the Fourth Proportional to 512,493,743.40, 768,740,615.10 and 426,329,442.60

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Solution

The fourth proportional to 512,493,743.40, 768,740,615.10 and 426,329,442.60 is: 639,494,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,493,743.40 : 768,740,615.10 = 426,329,442.60 : x
  2. Step 2: Convert to fraction form
    512,493,743.40/768,740,615.10 = 426,329,442.60/x
  3. Step 3: Cross multiply
    512,493,743.40x = 768,740,615.10 × 426,329,442.60
  4. Step 4: Simplify right side
    512,493,743.40x = 327,736,757,939,564,160
  5. Step 5: Solve for x
    x = 327,736,757,939,564,160/512,493,743.40
  6. Step 6: Final answer
    x = 639,494,163.90

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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.