Home / 815,615.83-1,223,436.05-283,153.78

Finding the Fourth Proportional to 815,615.83, 1,223,436.05 and 283,153.78

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Solution

The fourth proportional to 815,615.83, 1,223,436.05 and 283,153.78 is: 424,734.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,615.83 : 1,223,436.05 = 283,153.78 : x
  2. Step 2: Convert to fraction form
    815,615.83/1,223,436.05 = 283,153.78/x
  3. Step 3: Cross multiply
    815,615.83x = 1,223,436.05 × 283,153.78
  4. Step 4: Simplify right side
    815,615.83x = 346,420,542,145.77
  5. Step 5: Solve for x
    x = 346,420,542,145.77/815,615.83
  6. Step 6: Final answer
    x = 424,734.94

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1.5x scale

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.