Home / 815,214.83-1,223,033.65-309,784.55

Finding the Fourth Proportional to 815,214.83, 1,223,033.65 and 309,784.55

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Solution

The fourth proportional to 815,214.83, 1,223,033.65 and 309,784.55 is: 464,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,214.83 : 1,223,033.65 = 309,784.55 : x
  2. Step 2: Convert to fraction form
    815,214.83/1,223,033.65 = 309,784.55/x
  3. Step 3: Cross multiply
    815,214.83x = 1,223,033.65 × 309,784.55
  4. Step 4: Simplify right side
    815,214.83x = 378,876,922,010.48
  5. Step 5: Solve for x
    x = 378,876,922,010.48/815,214.83
  6. Step 6: Final answer
    x = 464,757.15

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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.