Home / 639,264.56-882,184.20-352,784.60

Finding the Fourth Proportional to 639,264.56, 882,184.20 and 352,784.60

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Solution

The fourth proportional to 639,264.56, 882,184.20 and 352,784.60 is: 486,842.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,264.56 : 882,184.20 = 352,784.60 : x
  2. Step 2: Convert to fraction form
    639,264.56/882,184.20 = 352,784.60/x
  3. Step 3: Cross multiply
    639,264.56x = 882,184.20 × 352,784.60
  4. Step 4: Simplify right side
    639,264.56x = 311,221,000,123.32
  5. Step 5: Solve for x
    x = 311,221,000,123.32/639,264.56
  6. Step 6: Final answer
    x = 486,842.26

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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.