Home / 639,343.54-882,259.59-397,619.29

Finding the Fourth Proportional to 639,343.54, 882,259.59 and 397,619.29

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Solution

The fourth proportional to 639,343.54, 882,259.59 and 397,619.29 is: 548,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,343.54 : 882,259.59 = 397,619.29 : x
  2. Step 2: Convert to fraction form
    639,343.54/882,259.59 = 397,619.29/x
  3. Step 3: Cross multiply
    639,343.54x = 882,259.59 × 397,619.29
  4. Step 4: Simplify right side
    639,343.54x = 350,803,431,771.49
  5. Step 5: Solve for x
    x = 350,803,431,771.49/639,343.54
  6. Step 6: Final answer
    x = 548,693.17

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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.