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Finding the Fourth Proportional to 519,313.70, 777,415.35 and 308,843.30

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Solution

The fourth proportional to 519,313.70, 777,415.35 and 308,843.30 is: 462,340.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,313.70 : 777,415.35 = 308,843.30 : x
  2. Step 2: Convert to fraction form
    519,313.70/777,415.35 = 308,843.30/x
  3. Step 3: Cross multiply
    519,313.70x = 777,415.35 × 308,843.30
  4. Step 4: Simplify right side
    519,313.70x = 240,099,522,164.66
  5. Step 5: Solve for x
    x = 240,099,522,164.66/519,313.70
  6. Step 6: Final answer
    x = 462,340.05

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1.5x scale

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.