Home / 812,982.26-1,121,914.71-450,428.69

Finding the Fourth Proportional to 812,982.26, 1,121,914.71 and 450,428.69

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Solution

The fourth proportional to 812,982.26, 1,121,914.71 and 450,428.69 is: 621,591.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,982.26 : 1,121,914.71 = 450,428.69 : x
  2. Step 2: Convert to fraction form
    812,982.26/1,121,914.71 = 450,428.69/x
  3. Step 3: Cross multiply
    812,982.26x = 1,121,914.71 × 450,428.69
  4. Step 4: Simplify right side
    812,982.26x = 505,342,567,507.46
  5. Step 5: Solve for x
    x = 505,342,567,507.46/812,982.26
  6. Step 6: Final answer
    x = 621,591.14

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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.