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Finding the Fourth Proportional to 658,851.20, 909,217.92 and 357,044.48

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Solution

The fourth proportional to 658,851.20, 909,217.92 and 357,044.48 is: 492,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,851.20 : 909,217.92 = 357,044.48 : x
  2. Step 2: Convert to fraction form
    658,851.20/909,217.92 = 357,044.48/x
  3. Step 3: Cross multiply
    658,851.20x = 909,217.92 × 357,044.48
  4. Step 4: Simplify right side
    658,851.20x = 324,631,239,453.08
  5. Step 5: Solve for x
    x = 324,631,239,453.08/658,851.20
  6. Step 6: Final answer
    x = 492,723.15

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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.