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Finding the Fourth Proportional to 1,192,613.76, 1,789,750.08 and 770,843.52

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Solution

The fourth proportional to 1,192,613.76, 1,789,750.08 and 770,843.52 is: 1,156,801.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,613.76 : 1,789,750.08 = 770,843.52 : x
  2. Step 2: Convert to fraction form
    1,192,613.76/1,789,750.08 = 770,843.52/x
  3. Step 3: Cross multiply
    1,192,613.76x = 1,789,750.08 × 770,843.52
  4. Step 4: Simplify right side
    1,192,613.76x = 1,379,617,251,587.48
  5. Step 5: Solve for x
    x = 1,379,617,251,587.48/1,192,613.76
  6. Step 6: Final answer
    x = 1,156,801.39

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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.