Home / 420,620.28-580,464.36-229,634.40

Finding the Fourth Proportional to 420,620.28, 580,464.36 and 229,634.40

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Solution

The fourth proportional to 420,620.28, 580,464.36 and 229,634.40 is: 316,900.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,620.28 : 580,464.36 = 229,634.40 : x
  2. Step 2: Convert to fraction form
    420,620.28/580,464.36 = 229,634.40/x
  3. Step 3: Cross multiply
    420,620.28x = 580,464.36 × 229,634.40
  4. Step 4: Simplify right side
    420,620.28x = 133,294,585,029.98
  5. Step 5: Solve for x
    x = 133,294,585,029.98/420,620.28
  6. Step 6: Final answer
    x = 316,900.04

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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.