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Finding the Fourth Proportional to 658,615.88, 908,820.37 and 372,080.63

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Solution

The fourth proportional to 658,615.88, 908,820.37 and 372,080.63 is: 513,431.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,615.88 : 908,820.37 = 372,080.63 : x
  2. Step 2: Convert to fraction form
    658,615.88/908,820.37 = 372,080.63/x
  3. Step 3: Cross multiply
    658,615.88x = 908,820.37 × 372,080.63
  4. Step 4: Simplify right side
    658,615.88x = 338,154,458,563.59
  5. Step 5: Solve for x
    x = 338,154,458,563.59/658,615.88
  6. Step 6: Final answer
    x = 513,431.98

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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.