Home / 878,669.27-1,212,821.38-511,232.86

Finding the Fourth Proportional to 878,669.27, 1,212,821.38 and 511,232.86

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Solution

The fourth proportional to 878,669.27, 1,212,821.38 and 511,232.86 is: 705,651.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,669.27 : 1,212,821.38 = 511,232.86 : x
  2. Step 2: Convert to fraction form
    878,669.27/1,212,821.38 = 511,232.86/x
  3. Step 3: Cross multiply
    878,669.27x = 1,212,821.38 × 511,232.86
  4. Step 4: Simplify right side
    878,669.27x = 620,034,136,702.44
  5. Step 5: Solve for x
    x = 620,034,136,702.44/878,669.27
  6. Step 6: Final answer
    x = 705,651.33

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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.