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Finding the Fourth Proportional to 617,728.49, 852,483.13 and 345,794.79

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Solution

The fourth proportional to 617,728.49, 852,483.13 and 345,794.79 is: 477,206.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,728.49 : 852,483.13 = 345,794.79 : x
  2. Step 2: Convert to fraction form
    617,728.49/852,483.13 = 345,794.79/x
  3. Step 3: Cross multiply
    617,728.49x = 852,483.13 × 345,794.79
  4. Step 4: Simplify right side
    617,728.49x = 294,784,224,399.10
  5. Step 5: Solve for x
    x = 294,784,224,399.10/617,728.49
  6. Step 6: Final answer
    x = 477,206.78

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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.