Home / 426,384,057.60-639,576,086.40-419,581,612.80

Finding the Fourth Proportional to 426,384,057.60, 639,576,086.40 and 419,581,612.80

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Solution

The fourth proportional to 426,384,057.60, 639,576,086.40 and 419,581,612.80 is: 629,372,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,384,057.60 : 639,576,086.40 = 419,581,612.80 : x
  2. Step 2: Convert to fraction form
    426,384,057.60/639,576,086.40 = 419,581,612.80/x
  3. Step 3: Cross multiply
    426,384,057.60x = 639,576,086.40 × 419,581,612.80
  4. Step 4: Simplify right side
    426,384,057.60x = 268,354,365,840,024,128
  5. Step 5: Solve for x
    x = 268,354,365,840,024,128/426,384,057.60
  6. Step 6: Final answer
    x = 629,372,419.20

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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.