Home / 639,435.20-882,420.72-352,955.44

Finding the Fourth Proportional to 639,435.20, 882,420.72 and 352,955.44

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Solution

The fourth proportional to 639,435.20, 882,420.72 and 352,955.44 is: 487,078.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,435.20 : 882,420.72 = 352,955.44 : x
  2. Step 2: Convert to fraction form
    639,435.20/882,420.72 = 352,955.44/x
  3. Step 3: Cross multiply
    639,435.20x = 882,420.72 × 352,955.44
  4. Step 4: Simplify right side
    639,435.20x = 311,455,193,492.72
  5. Step 5: Solve for x
    x = 311,455,193,492.72/639,435.20
  6. Step 6: Final answer
    x = 487,078.59

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1.5x scale

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.