Home / 812,485.49-1,121,229.34-449,909.34

Finding the Fourth Proportional to 812,485.49, 1,121,229.34 and 449,909.34

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Solution

The fourth proportional to 812,485.49, 1,121,229.34 and 449,909.34 is: 620,874.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,485.49 : 1,121,229.34 = 449,909.34 : x
  2. Step 2: Convert to fraction form
    812,485.49/1,121,229.34 = 449,909.34/x
  3. Step 3: Cross multiply
    812,485.49x = 1,121,229.34 × 449,909.34
  4. Step 4: Simplify right side
    812,485.49x = 504,451,547,018.65
  5. Step 5: Solve for x
    x = 504,451,547,018.65/812,485.49
  6. Step 6: Final answer
    x = 620,874.53

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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.