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Finding the Fourth Proportional to 617,302.11, 851,910.03 and 345,353.79

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Solution

The fourth proportional to 617,302.11, 851,910.03 and 345,353.79 is: 476,606.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,302.11 : 851,910.03 = 345,353.79 : x
  2. Step 2: Convert to fraction form
    617,302.11/851,910.03 = 345,353.79/x
  3. Step 3: Cross multiply
    617,302.11x = 851,910.03 × 345,353.79
  4. Step 4: Simplify right side
    617,302.11x = 294,210,357,599.51
  5. Step 5: Solve for x
    x = 294,210,357,599.51/617,302.11
  6. Step 6: Final answer
    x = 476,606.76

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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.