Home / 519,028.20-776,987.10-308,557.80

Finding the Fourth Proportional to 519,028.20, 776,987.10 and 308,557.80

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Solution

The fourth proportional to 519,028.20, 776,987.10 and 308,557.80 is: 461,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,028.20 : 776,987.10 = 308,557.80 : x
  2. Step 2: Convert to fraction form
    519,028.20/776,987.10 = 308,557.80/x
  3. Step 3: Cross multiply
    519,028.20x = 776,987.10 × 308,557.80
  4. Step 4: Simplify right side
    519,028.20x = 239,745,430,204.38
  5. Step 5: Solve for x
    x = 239,745,430,204.38/519,028.20
  6. Step 6: Final answer
    x = 461,912.15

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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.