Home / 1,288,859.28-1,933,835.64-689,665

Finding the Fourth Proportional to 1,288,859.28, 1,933,835.64 and 689,665

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Solution

The fourth proportional to 1,288,859.28, 1,933,835.64 and 689,665 is: 1,034,790.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,859.28 : 1,933,835.64 = 689,665 : x
  2. Step 2: Convert to fraction form
    1,288,859.28/1,933,835.64 = 689,665/x
  3. Step 3: Cross multiply
    1,288,859.28x = 1,933,835.64 × 689,665
  4. Step 4: Simplify right side
    1,288,859.28x = 1,333,698,756,660.60
  5. Step 5: Solve for x
    x = 1,333,698,756,660.60/1,288,859.28
  6. Step 6: Final answer
    x = 1,034,790.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.