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Finding the Fourth Proportional to 579,419.75, 799,601.03 and 321,314.87

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Solution

The fourth proportional to 579,419.75, 799,601.03 and 321,314.87 is: 443,415.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,419.75 : 799,601.03 = 321,314.87 : x
  2. Step 2: Convert to fraction form
    579,419.75/799,601.03 = 321,314.87/x
  3. Step 3: Cross multiply
    579,419.75x = 799,601.03 × 321,314.87
  4. Step 4: Simplify right side
    579,419.75x = 256,923,695,401.74
  5. Step 5: Solve for x
    x = 256,923,695,401.74/579,419.75
  6. Step 6: Final answer
    x = 443,415.50

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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.