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Finding the Fourth Proportional to 768,125.82, 1,059,717.99 and 481,146.30

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Solution

The fourth proportional to 768,125.82, 1,059,717.99 and 481,146.30 is: 663,796.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,125.82 : 1,059,717.99 = 481,146.30 : x
  2. Step 2: Convert to fraction form
    768,125.82/1,059,717.99 = 481,146.30/x
  3. Step 3: Cross multiply
    768,125.82x = 1,059,717.99 × 481,146.30
  4. Step 4: Simplify right side
    768,125.82x = 509,879,389,931.94
  5. Step 5: Solve for x
    x = 509,879,389,931.94/768,125.82
  6. Step 6: Final answer
    x = 663,796.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.