Home / 861,653.94-1,188,308.34-539,393.40

Finding the Fourth Proportional to 861,653.94, 1,188,308.34 and 539,393.40

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Solution

The fourth proportional to 861,653.94, 1,188,308.34 and 539,393.40 is: 743,878.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,653.94 : 1,188,308.34 = 539,393.40 : x
  2. Step 2: Convert to fraction form
    861,653.94/1,188,308.34 = 539,393.40/x
  3. Step 3: Cross multiply
    861,653.94x = 1,188,308.34 × 539,393.40
  4. Step 4: Simplify right side
    861,653.94x = 640,965,675,760.96
  5. Step 5: Solve for x
    x = 640,965,675,760.96/861,653.94
  6. Step 6: Final answer
    x = 743,878.31

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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.