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Finding the Fourth Proportional to 647,169.78, 893,157.48 and 483,542.36

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Solution

The fourth proportional to 647,169.78, 893,157.48 and 483,542.36 is: 667,335.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,169.78 : 893,157.48 = 483,542.36 : x
  2. Step 2: Convert to fraction form
    647,169.78/893,157.48 = 483,542.36/x
  3. Step 3: Cross multiply
    647,169.78x = 893,157.48 × 483,542.36
  4. Step 4: Simplify right side
    647,169.78x = 431,879,471,265.07
  5. Step 5: Solve for x
    x = 431,879,471,265.07/647,169.78
  6. Step 6: Final answer
    x = 667,335.66

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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.