Home / 420,618.51-580,450.49-229,631.85

Finding the Fourth Proportional to 420,618.51, 580,450.49 and 229,631.85

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Solution

The fourth proportional to 420,618.51, 580,450.49 and 229,631.85 is: 316,890.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,618.51 : 580,450.49 = 229,631.85 : x
  2. Step 2: Convert to fraction form
    420,618.51/580,450.49 = 229,631.85/x
  3. Step 3: Cross multiply
    420,618.51x = 580,450.49 × 229,631.85
  4. Step 4: Simplify right side
    420,618.51x = 133,289,919,565.07
  5. Step 5: Solve for x
    x = 133,289,919,565.07/420,618.51
  6. Step 6: Final answer
    x = 316,890.29

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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.