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Finding the Fourth Proportional to 658,980.89, 909,381.54 and 372,500.97

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Solution

The fourth proportional to 658,980.89, 909,381.54 and 372,500.97 is: 514,044.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,980.89 : 909,381.54 = 372,500.97 : x
  2. Step 2: Convert to fraction form
    658,980.89/909,381.54 = 372,500.97/x
  3. Step 3: Cross multiply
    658,980.89x = 909,381.54 × 372,500.97
  4. Step 4: Simplify right side
    658,980.89x = 338,745,505,750.09
  5. Step 5: Solve for x
    x = 338,745,505,750.09/658,980.89
  6. Step 6: Final answer
    x = 514,044.51

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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.