Home / 1,405,109.58-1,939,029.80-784,922.86

Finding the Fourth Proportional to 1,405,109.58, 1,939,029.80 and 784,922.86

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Solution

The fourth proportional to 1,405,109.58, 1,939,029.80 and 784,922.86 is: 1,083,181.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,109.58 : 1,939,029.80 = 784,922.86 : x
  2. Step 2: Convert to fraction form
    1,405,109.58/1,939,029.80 = 784,922.86/x
  3. Step 3: Cross multiply
    1,405,109.58x = 1,939,029.80 × 784,922.86
  4. Step 4: Simplify right side
    1,405,109.58x = 1,521,988,816,241.23
  5. Step 5: Solve for x
    x = 1,521,988,816,241.23/1,405,109.58
  6. Step 6: Final answer
    x = 1,083,181.58

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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.