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Finding the Fourth Proportional to 617,267.81, 851,862.66 and 345,319.48

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Solution

The fourth proportional to 617,267.81, 851,862.66 and 345,319.48 is: 476,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,267.81 : 851,862.66 = 345,319.48 : x
  2. Step 2: Convert to fraction form
    617,267.81/851,862.66 = 345,319.48/x
  3. Step 3: Cross multiply
    617,267.81x = 851,862.66 × 345,319.48
  4. Step 4: Simplify right side
    617,267.81x = 294,164,771,645.92
  5. Step 5: Solve for x
    x = 294,164,771,645.92/617,267.81
  6. Step 6: Final answer
    x = 476,559.39

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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.