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Finding the Fourth Proportional to 617,863.77, 852,687.13 and 345,929.28

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Solution

The fourth proportional to 617,863.77, 852,687.13 and 345,929.28 is: 477,402.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,863.77 : 852,687.13 = 345,929.28 : x
  2. Step 2: Convert to fraction form
    617,863.77/852,687.13 = 345,929.28/x
  3. Step 3: Cross multiply
    617,863.77x = 852,687.13 × 345,929.28
  4. Step 4: Simplify right side
    617,863.77x = 294,969,447,544.92
  5. Step 5: Solve for x
    x = 294,969,447,544.92/617,863.77
  6. Step 6: Final answer
    x = 477,402.08

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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.