Home / 1,189,969.40-1,782,329.70-628,347.80

Finding the Fourth Proportional to 1,189,969.40, 1,782,329.70 and 628,347.80

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Solution

The fourth proportional to 1,189,969.40, 1,782,329.70 and 628,347.80 is: 941,135.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,969.40 : 1,782,329.70 = 628,347.80 : x
  2. Step 2: Convert to fraction form
    1,189,969.40/1,782,329.70 = 628,347.80/x
  3. Step 3: Cross multiply
    1,189,969.40x = 1,782,329.70 × 628,347.80
  4. Step 4: Simplify right side
    1,189,969.40x = 1,119,922,945,869.66
  5. Step 5: Solve for x
    x = 1,119,922,945,869.66/1,189,969.40
  6. Step 6: Final answer
    x = 941,135.92

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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.