Home / 855,422.52-1,180,403.10-511,190.12

Finding the Fourth Proportional to 855,422.52, 1,180,403.10 and 511,190.12

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Solution

The fourth proportional to 855,422.52, 1,180,403.10 and 511,190.12 is: 705,394.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,422.52 : 1,180,403.10 = 511,190.12 : x
  2. Step 2: Convert to fraction form
    855,422.52/1,180,403.10 = 511,190.12/x
  3. Step 3: Cross multiply
    855,422.52x = 1,180,403.10 × 511,190.12
  4. Step 4: Simplify right side
    855,422.52x = 603,410,396,435.36
  5. Step 5: Solve for x
    x = 603,410,396,435.36/855,422.52
  6. Step 6: Final answer
    x = 705,394.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.