Home / 1,319,020.20-1,979,186.40-520,327.80

Finding the Fourth Proportional to 1,319,020.20, 1,979,186.40 and 520,327.80

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Solution

The fourth proportional to 1,319,020.20, 1,979,186.40 and 520,327.80 is: 780,750.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,020.20 : 1,979,186.40 = 520,327.80 : x
  2. Step 2: Convert to fraction form
    1,319,020.20/1,979,186.40 = 520,327.80/x
  3. Step 3: Cross multiply
    1,319,020.20x = 1,979,186.40 × 520,327.80
  4. Step 4: Simplify right side
    1,319,020.20x = 1,029,825,705,301.92
  5. Step 5: Solve for x
    x = 1,029,825,705,301.92/1,319,020.20
  6. Step 6: Final answer
    x = 780,750.52

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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.