Home / 1,319,076.20-1,978,614.30-520,092.20

Finding the Fourth Proportional to 1,319,076.20, 1,978,614.30 and 520,092.20

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Solution

The fourth proportional to 1,319,076.20, 1,978,614.30 and 520,092.20 is: 780,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,076.20 : 1,978,614.30 = 520,092.20 : x
  2. Step 2: Convert to fraction form
    1,319,076.20/1,978,614.30 = 520,092.20/x
  3. Step 3: Cross multiply
    1,319,076.20x = 1,978,614.30 × 520,092.20
  4. Step 4: Simplify right side
    1,319,076.20x = 1,029,061,864,238.46
  5. Step 5: Solve for x
    x = 1,029,061,864,238.46/1,319,076.20
  6. Step 6: Final answer
    x = 780,138.30

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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.