Home / 1,216,621.36-1,678,379.42-787,040.02

Finding the Fourth Proportional to 1,216,621.36, 1,678,379.42 and 787,040.02

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Solution

The fourth proportional to 1,216,621.36, 1,678,379.42 and 787,040.02 is: 1,085,754.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,621.36 : 1,678,379.42 = 787,040.02 : x
  2. Step 2: Convert to fraction form
    1,216,621.36/1,678,379.42 = 787,040.02/x
  3. Step 3: Cross multiply
    1,216,621.36x = 1,678,379.42 × 787,040.02
  4. Step 4: Simplify right side
    1,216,621.36x = 1,320,951,772,284.39
  5. Step 5: Solve for x
    x = 1,320,951,772,284.39/1,216,621.36
  6. Step 6: Final answer
    x = 1,085,754.22

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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.