Home / 815,763.30-1,222,387.40-436,734.32

Finding the Fourth Proportional to 815,763.30, 1,222,387.40 and 436,734.32

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Solution

The fourth proportional to 815,763.30, 1,222,387.40 and 436,734.32 is: 654,428.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,763.30 : 1,222,387.40 = 436,734.32 : x
  2. Step 2: Convert to fraction form
    815,763.30/1,222,387.40 = 436,734.32/x
  3. Step 3: Cross multiply
    815,763.30x = 1,222,387.40 × 436,734.32
  4. Step 4: Simplify right side
    815,763.30x = 533,858,529,915.57
  5. Step 5: Solve for x
    x = 533,858,529,915.57/815,763.30
  6. Step 6: Final answer
    x = 654,428.23

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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.