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Finding the Fourth Proportional to 581,310.40, 802,115.04 and 326,660.80

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Solution

The fourth proportional to 581,310.40, 802,115.04 and 326,660.80 is: 450,739.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,310.40 : 802,115.04 = 326,660.80 : x
  2. Step 2: Convert to fraction form
    581,310.40/802,115.04 = 326,660.80/x
  3. Step 3: Cross multiply
    581,310.40x = 802,115.04 × 326,660.80
  4. Step 4: Simplify right side
    581,310.40x = 262,019,540,658.43
  5. Step 5: Solve for x
    x = 262,019,540,658.43/581,310.40
  6. Step 6: Final answer
    x = 450,739.47

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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.