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Finding the Fourth Proportional to 490,447.72, 676,857.06 and 275,597.80

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Solution

The fourth proportional to 490,447.72, 676,857.06 and 275,597.80 is: 380,347.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,447.72 : 676,857.06 = 275,597.80 : x
  2. Step 2: Convert to fraction form
    490,447.72/676,857.06 = 275,597.80/x
  3. Step 3: Cross multiply
    490,447.72x = 676,857.06 × 275,597.80
  4. Step 4: Simplify right side
    490,447.72x = 186,540,316,650.47
  5. Step 5: Solve for x
    x = 186,540,316,650.47/490,447.72
  6. Step 6: Final answer
    x = 380,347.00

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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.