Home / 812,619.96-1,121,427.26-468,449.65

Finding the Fourth Proportional to 812,619.96, 1,121,427.26 and 468,449.65

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Solution

The fourth proportional to 812,619.96, 1,121,427.26 and 468,449.65 is: 646,467.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,619.96 : 1,121,427.26 = 468,449.65 : x
  2. Step 2: Convert to fraction form
    812,619.96/1,121,427.26 = 468,449.65/x
  3. Step 3: Cross multiply
    812,619.96x = 1,121,427.26 × 468,449.65
  4. Step 4: Simplify right side
    812,619.96x = 525,332,200,638.14
  5. Step 5: Solve for x
    x = 525,332,200,638.14/812,619.96
  6. Step 6: Final answer
    x = 646,467.26

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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.