Home / 812,784.72-1,121,706.06-450,242.28

Finding the Fourth Proportional to 812,784.72, 1,121,706.06 and 450,242.28

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Solution

The fourth proportional to 812,784.72, 1,121,706.06 and 450,242.28 is: 621,369.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,784.72 : 1,121,706.06 = 450,242.28 : x
  2. Step 2: Convert to fraction form
    812,784.72/1,121,706.06 = 450,242.28/x
  3. Step 3: Cross multiply
    812,784.72x = 1,121,706.06 × 450,242.28
  4. Step 4: Simplify right side
    812,784.72x = 505,039,493,944.22
  5. Step 5: Solve for x
    x = 505,039,493,944.22/812,784.72
  6. Step 6: Final answer
    x = 621,369.33

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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.