Home / 728,418.60-1,092,627.90-448,093.80

Finding the Fourth Proportional to 728,418.60, 1,092,627.90 and 448,093.80

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Solution

The fourth proportional to 728,418.60, 1,092,627.90 and 448,093.80 is: 672,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,418.60 : 1,092,627.90 = 448,093.80 : x
  2. Step 2: Convert to fraction form
    728,418.60/1,092,627.90 = 448,093.80/x
  3. Step 3: Cross multiply
    728,418.60x = 1,092,627.90 × 448,093.80
  4. Step 4: Simplify right side
    728,418.60x = 489,599,787,697.02
  5. Step 5: Solve for x
    x = 489,599,787,697.02/728,418.60
  6. Step 6: Final answer
    x = 672,140.70

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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.