Home / 1,106,816.78-1,660,399.86-387,359.40

Finding the Fourth Proportional to 1,106,816.78, 1,660,399.86 and 387,359.40

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Solution

The fourth proportional to 1,106,816.78, 1,660,399.86 and 387,359.40 is: 581,100.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106,816.78 : 1,660,399.86 = 387,359.40 : x
  2. Step 2: Convert to fraction form
    1,106,816.78/1,660,399.86 = 387,359.40/x
  3. Step 3: Cross multiply
    1,106,816.78x = 1,660,399.86 × 387,359.40
  4. Step 4: Simplify right side
    1,106,816.78x = 643,171,493,529.68
  5. Step 5: Solve for x
    x = 643,171,493,529.68/1,106,816.78
  6. Step 6: Final answer
    x = 581,100.24

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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.