Home / 1,008,346.05-1,389,603.60-721,367.91

Finding the Fourth Proportional to 1,008,346.05, 1,389,603.60 and 721,367.91

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Solution

The fourth proportional to 1,008,346.05, 1,389,603.60 and 721,367.91 is: 994,118.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,346.05 : 1,389,603.60 = 721,367.91 : x
  2. Step 2: Convert to fraction form
    1,008,346.05/1,389,603.60 = 721,367.91/x
  3. Step 3: Cross multiply
    1,008,346.05x = 1,389,603.60 × 721,367.91
  4. Step 4: Simplify right side
    1,008,346.05x = 1,002,415,444,660.48
  5. Step 5: Solve for x
    x = 1,002,415,444,660.48/1,008,346.05
  6. Step 6: Final answer
    x = 994,118.48

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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.