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Finding the Fourth Proportional to 617,632.49, 852,864.77 and 388,571.58

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Solution

The fourth proportional to 617,632.49, 852,864.77 and 388,571.58 is: 536,563.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,632.49 : 852,864.77 = 388,571.58 : x
  2. Step 2: Convert to fraction form
    617,632.49/852,864.77 = 388,571.58/x
  3. Step 3: Cross multiply
    617,632.49x = 852,864.77 × 388,571.58
  4. Step 4: Simplify right side
    617,632.49x = 331,399,011,205.24
  5. Step 5: Solve for x
    x = 331,399,011,205.24/617,632.49
  6. Step 6: Final answer
    x = 536,563.44

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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.