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Finding the Fourth Proportional to 490,042.98, 676,486.62 and 326,970.54

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Solution

The fourth proportional to 490,042.98, 676,486.62 and 326,970.54 is: 451,371.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,042.98 : 676,486.62 = 326,970.54 : x
  2. Step 2: Convert to fraction form
    490,042.98/676,486.62 = 326,970.54/x
  3. Step 3: Cross multiply
    490,042.98x = 676,486.62 × 326,970.54
  4. Step 4: Simplify right side
    490,042.98x = 221,191,195,444.18
  5. Step 5: Solve for x
    x = 221,191,195,444.18/490,042.98
  6. Step 6: Final answer
    x = 451,371.01

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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.