Home / 426,096,015.85-639,144,023.78-409,374,505.45

Finding the Fourth Proportional to 426,096,015.85, 639,144,023.78 and 409,374,505.45

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Solution

The fourth proportional to 426,096,015.85, 639,144,023.78 and 409,374,505.45 is: 614,061,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,096,015.85 : 639,144,023.78 = 409,374,505.45 : x
  2. Step 2: Convert to fraction form
    426,096,015.85/639,144,023.78 = 409,374,505.45/x
  3. Step 3: Cross multiply
    426,096,015.85x = 639,144,023.78 × 409,374,505.45
  4. Step 4: Simplify right side
    426,096,015.85x = 261,649,268,644,213,664
  5. Step 5: Solve for x
    x = 261,649,268,644,213,664/426,096,015.85
  6. Step 6: Final answer
    x = 614,061,758.18

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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.