Home / 1,189,816-1,784,053.31-390,883.03

Finding the Fourth Proportional to 1,189,816, 1,784,053.31 and 390,883.03

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Solution

The fourth proportional to 1,189,816, 1,784,053.31 and 390,883.03 is: 586,104.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,816 : 1,784,053.31 = 390,883.03 : x
  2. Step 2: Convert to fraction form
    1,189,816/1,784,053.31 = 390,883.03/x
  3. Step 3: Cross multiply
    1,189,816x = 1,784,053.31 × 390,883.03
  4. Step 4: Simplify right side
    1,189,816x = 697,356,163,494.33
  5. Step 5: Solve for x
    x = 697,356,163,494.33/1,189,816
  6. Step 6: Final answer
    x = 586,104.21

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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.