Home / 812,507.54-1,121,246.55-449,923.59

Finding the Fourth Proportional to 812,507.54, 1,121,246.55 and 449,923.59

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Solution

The fourth proportional to 812,507.54, 1,121,246.55 and 449,923.59 is: 620,886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,507.54 : 1,121,246.55 = 449,923.59 : x
  2. Step 2: Convert to fraction form
    812,507.54/1,121,246.55 = 449,923.59/x
  3. Step 3: Cross multiply
    812,507.54x = 1,121,246.55 × 449,923.59
  4. Step 4: Simplify right side
    812,507.54x = 504,475,273,051.12
  5. Step 5: Solve for x
    x = 504,475,273,051.12/812,507.54
  6. Step 6: Final answer
    x = 620,886.89

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Double scale
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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.