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Finding the Fourth Proportional to 572,299.56, 789,871.20 and 330,538.68

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Solution

The fourth proportional to 572,299.56, 789,871.20 and 330,538.68 is: 456,199.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,299.56 : 789,871.20 = 330,538.68 : x
  2. Step 2: Convert to fraction form
    572,299.56/789,871.20 = 330,538.68/x
  3. Step 3: Cross multiply
    572,299.56x = 789,871.20 × 330,538.68
  4. Step 4: Simplify right side
    572,299.56x = 261,082,983,818.02
  5. Step 5: Solve for x
    x = 261,082,983,818.02/572,299.56
  6. Step 6: Final answer
    x = 456,199.87

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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.