Home / 1,279,459.26-1,919,853.36-521,856.54

Finding the Fourth Proportional to 1,279,459.26, 1,919,853.36 and 521,856.54

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Solution

The fourth proportional to 1,279,459.26, 1,919,853.36 and 521,856.54 is: 783,055.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,459.26 : 1,919,853.36 = 521,856.54 : x
  2. Step 2: Convert to fraction form
    1,279,459.26/1,919,853.36 = 521,856.54/x
  3. Step 3: Cross multiply
    1,279,459.26x = 1,919,853.36 × 521,856.54
  4. Step 4: Simplify right side
    1,279,459.26x = 1,001,888,031,756.97
  5. Step 5: Solve for x
    x = 1,001,888,031,756.97/1,279,459.26
  6. Step 6: Final answer
    x = 783,055.83

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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.