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Finding the Fourth Proportional to 589,352.72, 813,306.84 and 321,080.72

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Solution

The fourth proportional to 589,352.72, 813,306.84 and 321,080.72 is: 443,091.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,352.72 : 813,306.84 = 321,080.72 : x
  2. Step 2: Convert to fraction form
    589,352.72/813,306.84 = 321,080.72/x
  3. Step 3: Cross multiply
    589,352.72x = 813,306.84 × 321,080.72
  4. Step 4: Simplify right side
    589,352.72x = 261,137,145,768.13
  5. Step 5: Solve for x
    x = 261,137,145,768.13/589,352.72
  6. Step 6: Final answer
    x = 443,091.44

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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.