Home / 420,780.82-580,679.67-229,794.22

Finding the Fourth Proportional to 420,780.82, 580,679.67 and 229,794.22

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Solution

The fourth proportional to 420,780.82, 580,679.67 and 229,794.22 is: 317,117.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,780.82 : 580,679.67 = 229,794.22 : x
  2. Step 2: Convert to fraction form
    420,780.82/580,679.67 = 229,794.22/x
  3. Step 3: Cross multiply
    420,780.82x = 580,679.67 × 229,794.22
  4. Step 4: Simplify right side
    420,780.82x = 133,436,831,837.51
  5. Step 5: Solve for x
    x = 133,436,831,837.51/420,780.82
  6. Step 6: Final answer
    x = 317,117.19

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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.