Home / 1,328,470.20-1,992,705.30-879,697.80

Finding the Fourth Proportional to 1,328,470.20, 1,992,705.30 and 879,697.80

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Solution

The fourth proportional to 1,328,470.20, 1,992,705.30 and 879,697.80 is: 1,319,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,470.20 : 1,992,705.30 = 879,697.80 : x
  2. Step 2: Convert to fraction form
    1,328,470.20/1,992,705.30 = 879,697.80/x
  3. Step 3: Cross multiply
    1,328,470.20x = 1,992,705.30 × 879,697.80
  4. Step 4: Simplify right side
    1,328,470.20x = 1,752,978,468,458.34
  5. Step 5: Solve for x
    x = 1,752,978,468,458.34/1,328,470.20
  6. Step 6: Final answer
    x = 1,319,546.70

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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.