Home / 505,485,812.70-758,228,719.05-413,652,807.90

Finding the Fourth Proportional to 505,485,812.70, 758,228,719.05 and 413,652,807.90

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Solution

The fourth proportional to 505,485,812.70, 758,228,719.05 and 413,652,807.90 is: 620,479,211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,485,812.70 : 758,228,719.05 = 413,652,807.90 : x
  2. Step 2: Convert to fraction form
    505,485,812.70/758,228,719.05 = 413,652,807.90/x
  3. Step 3: Cross multiply
    505,485,812.70x = 758,228,719.05 × 413,652,807.90
  4. Step 4: Simplify right side
    505,485,812.70x = 313,643,438,665,452,672
  5. Step 5: Solve for x
    x = 313,643,438,665,452,672/505,485,812.70
  6. Step 6: Final answer
    x = 620,479,211.85

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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.