Home / 1,285,454.80-1,930,255.80-866,587.60

Finding the Fourth Proportional to 1,285,454.80, 1,930,255.80 and 866,587.60

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Solution

The fourth proportional to 1,285,454.80, 1,930,255.80 and 866,587.60 is: 1,301,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,454.80 : 1,930,255.80 = 866,587.60 : x
  2. Step 2: Convert to fraction form
    1,285,454.80/1,930,255.80 = 866,587.60/x
  3. Step 3: Cross multiply
    1,285,454.80x = 1,930,255.80 × 866,587.60
  4. Step 4: Simplify right side
    1,285,454.80x = 1,672,735,741,108.08
  5. Step 5: Solve for x
    x = 1,672,735,741,108.08/1,285,454.80
  6. Step 6: Final answer
    x = 1,301,279.31

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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.