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Finding the Fourth Proportional to 768,310.60, 1,150,133.10 and 684,329.80

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Solution

The fourth proportional to 768,310.60, 1,150,133.10 and 684,329.80 is: 1,024,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,310.60 : 1,150,133.10 = 684,329.80 : x
  2. Step 2: Convert to fraction form
    768,310.60/1,150,133.10 = 684,329.80/x
  3. Step 3: Cross multiply
    768,310.60x = 1,150,133.10 × 684,329.80
  4. Step 4: Simplify right side
    768,310.60x = 787,070,354,296.38
  5. Step 5: Solve for x
    x = 787,070,354,296.38/768,310.60
  6. Step 6: Final answer
    x = 1,024,416.89

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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.