Home / 744,816-1,027,837.44-405,278.40

Finding the Fourth Proportional to 744,816, 1,027,837.44 and 405,278.40

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Solution

The fourth proportional to 744,816, 1,027,837.44 and 405,278.40 is: 559,279.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,816 : 1,027,837.44 = 405,278.40 : x
  2. Step 2: Convert to fraction form
    744,816/1,027,837.44 = 405,278.40/x
  3. Step 3: Cross multiply
    744,816x = 1,027,837.44 × 405,278.40
  4. Step 4: Simplify right side
    744,816x = 416,560,313,143.30
  5. Step 5: Solve for x
    x = 416,560,313,143.30/744,816
  6. Step 6: Final answer
    x = 559,279.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.