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Finding the Fourth Proportional to 617,106.76, 851,363.94 and 387,529

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Solution

The fourth proportional to 617,106.76, 851,363.94 and 387,529 is: 534,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,106.76 : 851,363.94 = 387,529 : x
  2. Step 2: Convert to fraction form
    617,106.76/851,363.94 = 387,529/x
  3. Step 3: Cross multiply
    617,106.76x = 851,363.94 × 387,529
  4. Step 4: Simplify right side
    617,106.76x = 329,928,216,304.26
  5. Step 5: Solve for x
    x = 329,928,216,304.26/617,106.76
  6. Step 6: Final answer
    x = 534,637.18

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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.