Home / 815,837.20-1,224,193.20-342,570.40

Finding the Fourth Proportional to 815,837.20, 1,224,193.20 and 342,570.40

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Solution

The fourth proportional to 815,837.20, 1,224,193.20 and 342,570.40 is: 514,039.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,837.20 : 1,224,193.20 = 342,570.40 : x
  2. Step 2: Convert to fraction form
    815,837.20/1,224,193.20 = 342,570.40/x
  3. Step 3: Cross multiply
    815,837.20x = 1,224,193.20 × 342,570.40
  4. Step 4: Simplify right side
    815,837.20x = 419,372,354,201.28
  5. Step 5: Solve for x
    x = 419,372,354,201.28/815,837.20
  6. Step 6: Final answer
    x = 514,039.26

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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.