Home / 638,974.88-881,788.22-352,494.89

Finding the Fourth Proportional to 638,974.88, 881,788.22 and 352,494.89

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Solution

The fourth proportional to 638,974.88, 881,788.22 and 352,494.89 is: 486,444.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,974.88 : 881,788.22 = 352,494.89 : x
  2. Step 2: Convert to fraction form
    638,974.88/881,788.22 = 352,494.89/x
  3. Step 3: Cross multiply
    638,974.88x = 881,788.22 × 352,494.89
  4. Step 4: Simplify right side
    638,974.88x = 310,825,842,052.13
  5. Step 5: Solve for x
    x = 310,825,842,052.13/638,974.88
  6. Step 6: Final answer
    x = 486,444.54

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Double scale
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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.