Home / 1,279,250.55-1,918,744.31-426,230.06

Finding the Fourth Proportional to 1,279,250.55, 1,918,744.31 and 426,230.06

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Solution

The fourth proportional to 1,279,250.55, 1,918,744.31 and 426,230.06 is: 639,301.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,250.55 : 1,918,744.31 = 426,230.06 : x
  2. Step 2: Convert to fraction form
    1,279,250.55/1,918,744.31 = 426,230.06/x
  3. Step 3: Cross multiply
    1,279,250.55x = 1,918,744.31 × 426,230.06
  4. Step 4: Simplify right side
    1,279,250.55x = 817,826,502,375.96
  5. Step 5: Solve for x
    x = 817,826,502,375.96/1,279,250.55
  6. Step 6: Final answer
    x = 639,301.27

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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.