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Finding the Fourth Proportional to 639,449.82, 882,505.50 and 549,104.88

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Solution

The fourth proportional to 639,449.82, 882,505.50 and 549,104.88 is: 757,820.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,449.82 : 882,505.50 = 549,104.88 : x
  2. Step 2: Convert to fraction form
    639,449.82/882,505.50 = 549,104.88/x
  3. Step 3: Cross multiply
    639,449.82x = 882,505.50 × 549,104.88
  4. Step 4: Simplify right side
    639,449.82x = 484,588,076,676.84
  5. Step 5: Solve for x
    x = 484,588,076,676.84/639,449.82
  6. Step 6: Final answer
    x = 757,820.33

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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.