Home / 420,918.28-580,845.57-229,894.76

Finding the Fourth Proportional to 420,918.28, 580,845.57 and 229,894.76

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Solution

The fourth proportional to 420,918.28, 580,845.57 and 229,894.76 is: 317,242.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,918.28 : 580,845.57 = 229,894.76 : x
  2. Step 2: Convert to fraction form
    420,918.28/580,845.57 = 229,894.76/x
  3. Step 3: Cross multiply
    420,918.28x = 580,845.57 × 229,894.76
  4. Step 4: Simplify right side
    420,918.28x = 133,533,352,912.21
  5. Step 5: Solve for x
    x = 133,533,352,912.21/420,918.28
  6. Step 6: Final answer
    x = 317,242.94

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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.