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Finding the Fourth Proportional to 428,556.88, 591,288.79 and 337,630.60

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Solution

The fourth proportional to 428,556.88, 591,288.79 and 337,630.60 is: 465,835.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,556.88 : 591,288.79 = 337,630.60 : x
  2. Step 2: Convert to fraction form
    428,556.88/591,288.79 = 337,630.60/x
  3. Step 3: Cross multiply
    428,556.88x = 591,288.79 × 337,630.60
  4. Step 4: Simplify right side
    428,556.88x = 199,637,190,182.48
  5. Step 5: Solve for x
    x = 199,637,190,182.48/428,556.88
  6. Step 6: Final answer
    x = 465,835.93

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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.