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Finding the Fourth Proportional to 579,349.94, 799,470.92 and 321,211.85

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Solution

The fourth proportional to 579,349.94, 799,470.92 and 321,211.85 is: 443,254.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,349.94 : 799,470.92 = 321,211.85 : x
  2. Step 2: Convert to fraction form
    579,349.94/799,470.92 = 321,211.85/x
  3. Step 3: Cross multiply
    579,349.94x = 799,470.92 × 321,211.85
  4. Step 4: Simplify right side
    579,349.94x = 256,799,530,040.08
  5. Step 5: Solve for x
    x = 256,799,530,040.08/579,349.94
  6. Step 6: Final answer
    x = 443,254.61

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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.