Home / 812,978.92-1,121,708.26-468,920.04

Finding the Fourth Proportional to 812,978.92, 1,121,708.26 and 468,920.04

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Solution

The fourth proportional to 812,978.92, 1,121,708.26 and 468,920.04 is: 646,992.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,978.92 : 1,121,708.26 = 468,920.04 : x
  2. Step 2: Convert to fraction form
    812,978.92/1,121,708.26 = 468,920.04/x
  3. Step 3: Cross multiply
    812,978.92x = 1,121,708.26 × 468,920.04
  4. Step 4: Simplify right side
    812,978.92x = 525,991,482,147.53
  5. Step 5: Solve for x
    x = 525,991,482,147.53/812,978.92
  6. Step 6: Final answer
    x = 646,992.77

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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.