Home / 1,419,661.51-2,129,510.72-408,800.05

Finding the Fourth Proportional to 1,419,661.51, 2,129,510.72 and 408,800.05

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Solution

The fourth proportional to 1,419,661.51, 2,129,510.72 and 408,800.05 is: 613,205.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,661.51 : 2,129,510.72 = 408,800.05 : x
  2. Step 2: Convert to fraction form
    1,419,661.51/2,129,510.72 = 408,800.05/x
  3. Step 3: Cross multiply
    1,419,661.51x = 2,129,510.72 × 408,800.05
  4. Step 4: Simplify right side
    1,419,661.51x = 870,544,076,119.98
  5. Step 5: Solve for x
    x = 870,544,076,119.98/1,419,661.51
  6. Step 6: Final answer
    x = 613,205.38

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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.