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Finding the Fourth Proportional to 617,604.06, 851,616.80 and 402,344.94

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Solution

The fourth proportional to 617,604.06, 851,616.80 and 402,344.94 is: 554,795.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,604.06 : 851,616.80 = 402,344.94 : x
  2. Step 2: Convert to fraction form
    617,604.06/851,616.80 = 402,344.94/x
  3. Step 3: Cross multiply
    617,604.06x = 851,616.80 × 402,344.94
  4. Step 4: Simplify right side
    617,604.06x = 342,643,715,252.81
  5. Step 5: Solve for x
    x = 342,643,715,252.81/617,604.06
  6. Step 6: Final answer
    x = 554,795.11

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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.