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Finding the Fourth Proportional to 579,357.27, 799,595.42 and 321,291.61

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Solution

The fourth proportional to 579,357.27, 799,595.42 and 321,291.61 is: 443,428.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,357.27 : 799,595.42 = 321,291.61 : x
  2. Step 2: Convert to fraction form
    579,357.27/799,595.42 = 321,291.61/x
  3. Step 3: Cross multiply
    579,357.27x = 799,595.42 × 321,291.61
  4. Step 4: Simplify right side
    579,357.27x = 256,903,299,840.43
  5. Step 5: Solve for x
    x = 256,903,299,840.43/579,357.27
  6. Step 6: Final answer
    x = 443,428.11

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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.