Home / 861,391.54-1,188,702.57-539,278.84

Finding the Fourth Proportional to 861,391.54, 1,188,702.57 and 539,278.84

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Solution

The fourth proportional to 861,391.54, 1,188,702.57 and 539,278.84 is: 744,193.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,391.54 : 1,188,702.57 = 539,278.84 : x
  2. Step 2: Convert to fraction form
    861,391.54/1,188,702.57 = 539,278.84/x
  3. Step 3: Cross multiply
    861,391.54x = 1,188,702.57 × 539,278.84
  4. Step 4: Simplify right side
    861,391.54x = 641,042,143,054.62
  5. Step 5: Solve for x
    x = 641,042,143,054.62/861,391.54
  6. Step 6: Final answer
    x = 744,193.68

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Double scale
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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.