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Finding the Fourth Proportional to 891,092.40, 1,336,638.60 and 800,890.80

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Solution

The fourth proportional to 891,092.40, 1,336,638.60 and 800,890.80 is: 1,201,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,092.40 : 1,336,638.60 = 800,890.80 : x
  2. Step 2: Convert to fraction form
    891,092.40/1,336,638.60 = 800,890.80/x
  3. Step 3: Cross multiply
    891,092.40x = 1,336,638.60 × 800,890.80
  4. Step 4: Simplify right side
    891,092.40x = 1,070,501,557,664.88
  5. Step 5: Solve for x
    x = 1,070,501,557,664.88/891,092.40
  6. Step 6: Final answer
    x = 1,201,336.20

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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.