Home / 1,690,320.90-2,332,629.45-926,372.64

Finding the Fourth Proportional to 1,690,320.90, 2,332,629.45 and 926,372.64

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Solution

The fourth proportional to 1,690,320.90, 2,332,629.45 and 926,372.64 is: 1,278,386.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,320.90 : 2,332,629.45 = 926,372.64 : x
  2. Step 2: Convert to fraction form
    1,690,320.90/2,332,629.45 = 926,372.64/x
  3. Step 3: Cross multiply
    1,690,320.90x = 2,332,629.45 × 926,372.64
  4. Step 4: Simplify right side
    1,690,320.90x = 2,160,884,101,738.25
  5. Step 5: Solve for x
    x = 2,160,884,101,738.25/1,690,320.90
  6. Step 6: Final answer
    x = 1,278,386.90

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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.