Home / 1,021,379-1,409,512.74-568,679.72

Finding the Fourth Proportional to 1,021,379, 1,409,512.74 and 568,679.72

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Solution

The fourth proportional to 1,021,379, 1,409,512.74 and 568,679.72 is: 784,783.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,379 : 1,409,512.74 = 568,679.72 : x
  2. Step 2: Convert to fraction form
    1,021,379/1,409,512.74 = 568,679.72/x
  3. Step 3: Cross multiply
    1,021,379x = 1,409,512.74 × 568,679.72
  4. Step 4: Simplify right side
    1,021,379x = 801,561,310,319.63
  5. Step 5: Solve for x
    x = 801,561,310,319.63/1,021,379
  6. Step 6: Final answer
    x = 784,783.43

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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.