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Finding the Fourth Proportional to 628,179.52, 866,910.72 and 348,784.60

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Solution

The fourth proportional to 628,179.52, 866,910.72 and 348,784.60 is: 481,335.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,179.52 : 866,910.72 = 348,784.60 : x
  2. Step 2: Convert to fraction form
    628,179.52/866,910.72 = 348,784.60/x
  3. Step 3: Cross multiply
    628,179.52x = 866,910.72 × 348,784.60
  4. Step 4: Simplify right side
    628,179.52x = 302,365,108,710.91
  5. Step 5: Solve for x
    x = 302,365,108,710.91/628,179.52
  6. Step 6: Final answer
    x = 481,335.51

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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.