Home / 887,653.80-1,330,605.90-438,006.60

Finding the Fourth Proportional to 887,653.80, 1,330,605.90 and 438,006.60

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Solution

The fourth proportional to 887,653.80, 1,330,605.90 and 438,006.60 is: 656,578.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,653.80 : 1,330,605.90 = 438,006.60 : x
  2. Step 2: Convert to fraction form
    887,653.80/1,330,605.90 = 438,006.60/x
  3. Step 3: Cross multiply
    887,653.80x = 1,330,605.90 × 438,006.60
  4. Step 4: Simplify right side
    887,653.80x = 582,814,166,198.94
  5. Step 5: Solve for x
    x = 582,814,166,198.94/887,653.80
  6. Step 6: Final answer
    x = 656,578.24

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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.