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Finding the Fourth Proportional to 605,121.60, 907,682.40 and 576,091.20

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Solution

The fourth proportional to 605,121.60, 907,682.40 and 576,091.20 is: 864,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,121.60 : 907,682.40 = 576,091.20 : x
  2. Step 2: Convert to fraction form
    605,121.60/907,682.40 = 576,091.20/x
  3. Step 3: Cross multiply
    605,121.60x = 907,682.40 × 576,091.20
  4. Step 4: Simplify right side
    605,121.60x = 522,907,843,034.88
  5. Step 5: Solve for x
    x = 522,907,843,034.88/605,121.60
  6. Step 6: Final answer
    x = 864,136.80

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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.