Home / 639,242.10-882,128.28-352,758.45

Finding the Fourth Proportional to 639,242.10, 882,128.28 and 352,758.45

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Solution

The fourth proportional to 639,242.10, 882,128.28 and 352,758.45 is: 486,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,242.10 : 882,128.28 = 352,758.45 : x
  2. Step 2: Convert to fraction form
    639,242.10/882,128.28 = 352,758.45/x
  3. Step 3: Cross multiply
    639,242.10x = 882,128.28 × 352,758.45
  4. Step 4: Simplify right side
    639,242.10x = 311,178,204,753.97
  5. Step 5: Solve for x
    x = 311,178,204,753.97/639,242.10
  6. Step 6: Final answer
    x = 486,792.41

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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.