Home / 1,478,605.20-2,040,487.38-816,338.40

Finding the Fourth Proportional to 1,478,605.20, 2,040,487.38 and 816,338.40

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Solution

The fourth proportional to 1,478,605.20, 2,040,487.38 and 816,338.40 is: 1,126,553.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,605.20 : 2,040,487.38 = 816,338.40 : x
  2. Step 2: Convert to fraction form
    1,478,605.20/2,040,487.38 = 816,338.40/x
  3. Step 3: Cross multiply
    1,478,605.20x = 2,040,487.38 × 816,338.40
  4. Step 4: Simplify right side
    1,478,605.20x = 1,665,728,203,009.39
  5. Step 5: Solve for x
    x = 1,665,728,203,009.39/1,478,605.20
  6. Step 6: Final answer
    x = 1,126,553.73

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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.