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Finding the Fourth Proportional to 489,994.23, 676,298.94 and 352,540.47

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Solution

The fourth proportional to 489,994.23, 676,298.94 and 352,540.47 is: 486,582.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,994.23 : 676,298.94 = 352,540.47 : x
  2. Step 2: Convert to fraction form
    489,994.23/676,298.94 = 352,540.47/x
  3. Step 3: Cross multiply
    489,994.23x = 676,298.94 × 352,540.47
  4. Step 4: Simplify right side
    489,994.23x = 238,422,746,168.10
  5. Step 5: Solve for x
    x = 238,422,746,168.10/489,994.23
  6. Step 6: Final answer
    x = 486,582.76

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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.