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Finding the Fourth Proportional to 617,604.56, 851,617.49 and 402,345.44

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Solution

The fourth proportional to 617,604.56, 851,617.49 and 402,345.44 is: 554,795.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,604.56 : 851,617.49 = 402,345.44 : x
  2. Step 2: Convert to fraction form
    617,604.56/851,617.49 = 402,345.44/x
  3. Step 3: Cross multiply
    617,604.56x = 851,617.49 × 402,345.44
  4. Step 4: Simplify right side
    617,604.56x = 342,644,413,725.75
  5. Step 5: Solve for x
    x = 342,644,413,725.75/617,604.56
  6. Step 6: Final answer
    x = 554,795.80

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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.