Home / 420,785.55-580,674.83-229,799.70

Finding the Fourth Proportional to 420,785.55, 580,674.83 and 229,799.70

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Solution

The fourth proportional to 420,785.55, 580,674.83 and 229,799.70 is: 317,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,785.55 : 580,674.83 = 229,799.70 : x
  2. Step 2: Convert to fraction form
    420,785.55/580,674.83 = 229,799.70/x
  3. Step 3: Cross multiply
    420,785.55x = 580,674.83 × 229,799.70
  4. Step 4: Simplify right side
    420,785.55x = 133,438,900,582.55
  5. Step 5: Solve for x
    x = 133,438,900,582.55/420,785.55
  6. Step 6: Final answer
    x = 317,118.54

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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.