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Finding the Fourth Proportional to 768,414.80, 1,151,153.40 and 413,310.80

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Solution

The fourth proportional to 768,414.80, 1,151,153.40 and 413,310.80 is: 619,176.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,414.80 : 1,151,153.40 = 413,310.80 : x
  2. Step 2: Convert to fraction form
    768,414.80/1,151,153.40 = 413,310.80/x
  3. Step 3: Cross multiply
    768,414.80x = 1,151,153.40 × 413,310.80
  4. Step 4: Simplify right side
    768,414.80x = 475,784,132,676.72
  5. Step 5: Solve for x
    x = 475,784,132,676.72/768,414.80
  6. Step 6: Final answer
    x = 619,176.17

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1.5x scale

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.