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Finding the Fourth Proportional to 639,532.48, 882,556.74 and 349,144.52

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Solution

The fourth proportional to 639,532.48, 882,556.74 and 349,144.52 is: 481,820.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,532.48 : 882,556.74 = 349,144.52 : x
  2. Step 2: Convert to fraction form
    639,532.48/882,556.74 = 349,144.52/x
  3. Step 3: Cross multiply
    639,532.48x = 882,556.74 × 349,144.52
  4. Step 4: Simplify right side
    639,532.48x = 308,139,849,360.07
  5. Step 5: Solve for x
    x = 308,139,849,360.07/639,532.48
  6. Step 6: Final answer
    x = 481,820.48

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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.