Home / 1,055,018.21-1,578,006.09-978,439.19

Finding the Fourth Proportional to 1,055,018.21, 1,578,006.09 and 978,439.19

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Solution

The fourth proportional to 1,055,018.21, 1,578,006.09 and 978,439.19 is: 1,463,465.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055,018.21 : 1,578,006.09 = 978,439.19 : x
  2. Step 2: Convert to fraction form
    1,055,018.21/1,578,006.09 = 978,439.19/x
  3. Step 3: Cross multiply
    1,055,018.21x = 1,578,006.09 × 978,439.19
  4. Step 4: Simplify right side
    1,055,018.21x = 1,543,982,992,624.64
  5. Step 5: Solve for x
    x = 1,543,982,992,624.64/1,055,018.21
  6. Step 6: Final answer
    x = 1,463,465.73

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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.