Home / 1,605,372.69-2,215,513.85-889,980.69

Finding the Fourth Proportional to 1,605,372.69, 2,215,513.85 and 889,980.69

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Solution

The fourth proportional to 1,605,372.69, 2,215,513.85 and 889,980.69 is: 1,228,228.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605,372.69 : 2,215,513.85 = 889,980.69 : x
  2. Step 2: Convert to fraction form
    1,605,372.69/2,215,513.85 = 889,980.69/x
  3. Step 3: Cross multiply
    1,605,372.69x = 2,215,513.85 × 889,980.69
  4. Step 4: Simplify right side
    1,605,372.69x = 1,971,764,540,477.65
  5. Step 5: Solve for x
    x = 1,971,764,540,477.65/1,605,372.69
  6. Step 6: Final answer
    x = 1,228,228.53

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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.