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Finding the Fourth Proportional to 1,605,960, 2,216,224.80 and 890,568

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Solution

The fourth proportional to 1,605,960, 2,216,224.80 and 890,568 is: 1,228,983.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605,960 : 2,216,224.80 = 890,568 : x
  2. Step 2: Convert to fraction form
    1,605,960/2,216,224.80 = 890,568/x
  3. Step 3: Cross multiply
    1,605,960x = 2,216,224.80 × 890,568
  4. Step 4: Simplify right side
    1,605,960x = 1,973,698,887,686.40
  5. Step 5: Solve for x
    x = 1,973,698,887,686.40/1,605,960
  6. Step 6: Final answer
    x = 1,228,983.84

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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.