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Finding the Fourth Proportional to 383,611.60, 575,417.40 and 326,530.90

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Solution

The fourth proportional to 383,611.60, 575,417.40 and 326,530.90 is: 489,796.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,611.60 : 575,417.40 = 326,530.90 : x
  2. Step 2: Convert to fraction form
    383,611.60/575,417.40 = 326,530.90/x
  3. Step 3: Cross multiply
    383,611.60x = 575,417.40 × 326,530.90
  4. Step 4: Simplify right side
    383,611.60x = 187,891,561,497.66
  5. Step 5: Solve for x
    x = 187,891,561,497.66/383,611.60
  6. Step 6: Final answer
    x = 489,796.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.