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Finding the Fourth Proportional to 617,603.82, 851,616.46 and 402,344.70

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Solution

The fourth proportional to 617,603.82, 851,616.46 and 402,344.70 is: 554,794.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,603.82 : 851,616.46 = 402,344.70 : x
  2. Step 2: Convert to fraction form
    617,603.82/851,616.46 = 402,344.70/x
  3. Step 3: Cross multiply
    617,603.82x = 851,616.46 × 402,344.70
  4. Step 4: Simplify right side
    617,603.82x = 342,643,364,855.68
  5. Step 5: Solve for x
    x = 342,643,364,855.68/617,603.82
  6. Step 6: Final answer
    x = 554,794.77

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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.