Home / 1,229,978.91-1,844,980.77-431,279.70

Finding the Fourth Proportional to 1,229,978.91, 1,844,980.77 and 431,279.70

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Solution

The fourth proportional to 1,229,978.91, 1,844,980.77 and 431,279.70 is: 646,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,978.91 : 1,844,980.77 = 431,279.70 : x
  2. Step 2: Convert to fraction form
    1,229,978.91/1,844,980.77 = 431,279.70/x
  3. Step 3: Cross multiply
    1,229,978.91x = 1,844,980.77 × 431,279.70
  4. Step 4: Simplify right side
    1,229,978.91x = 795,702,752,991.37
  5. Step 5: Solve for x
    x = 795,702,752,991.37/1,229,978.91
  6. Step 6: Final answer
    x = 646,923.90

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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.