Home / 638,994.60-881,815.53-352,514.61

Finding the Fourth Proportional to 638,994.60, 881,815.53 and 352,514.61

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Solution

The fourth proportional to 638,994.60, 881,815.53 and 352,514.61 is: 486,471.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,994.60 : 881,815.53 = 352,514.61 : x
  2. Step 2: Convert to fraction form
    638,994.60/881,815.53 = 352,514.61/x
  3. Step 3: Cross multiply
    638,994.60x = 881,815.53 × 352,514.61
  4. Step 4: Simplify right side
    638,994.60x = 310,852,857,649.89
  5. Step 5: Solve for x
    x = 310,852,857,649.89/638,994.60
  6. Step 6: Final answer
    x = 486,471.81

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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.