Home / 1,319,867.80-1,978,999.80-520,227.70

Finding the Fourth Proportional to 1,319,867.80, 1,978,999.80 and 520,227.70

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Solution

The fourth proportional to 1,319,867.80, 1,978,999.80 and 520,227.70 is: 780,025.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,867.80 : 1,978,999.80 = 520,227.70 : x
  2. Step 2: Convert to fraction form
    1,319,867.80/1,978,999.80 = 520,227.70/x
  3. Step 3: Cross multiply
    1,319,867.80x = 1,978,999.80 × 520,227.70
  4. Step 4: Simplify right side
    1,319,867.80x = 1,029,530,514,254.46
  5. Step 5: Solve for x
    x = 1,029,530,514,254.46/1,319,867.80
  6. Step 6: Final answer
    x = 780,025.48

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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.