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Finding the Fourth Proportional to 617,679.66, 852,412.37 and 345,740.79

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Solution

The fourth proportional to 617,679.66, 852,412.37 and 345,740.79 is: 477,130.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,679.66 : 852,412.37 = 345,740.79 : x
  2. Step 2: Convert to fraction form
    617,679.66/852,412.37 = 345,740.79/x
  3. Step 3: Cross multiply
    617,679.66x = 852,412.37 × 345,740.79
  4. Step 4: Simplify right side
    617,679.66x = 294,713,724,480.87
  5. Step 5: Solve for x
    x = 294,713,724,480.87/617,679.66
  6. Step 6: Final answer
    x = 477,130.37

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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.