Home / 820,938.35-1,231,449.03-315,322.07

Finding the Fourth Proportional to 820,938.35, 1,231,449.03 and 315,322.07

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Solution

The fourth proportional to 820,938.35, 1,231,449.03 and 315,322.07 is: 472,999.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,938.35 : 1,231,449.03 = 315,322.07 : x
  2. Step 2: Convert to fraction form
    820,938.35/1,231,449.03 = 315,322.07/x
  3. Step 3: Cross multiply
    820,938.35x = 1,231,449.03 × 315,322.07
  4. Step 4: Simplify right side
    820,938.35x = 388,303,051,081.85
  5. Step 5: Solve for x
    x = 388,303,051,081.85/820,938.35
  6. Step 6: Final answer
    x = 472,999.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.