Home / 1,383,496.80-1,908,935.28-839,918.76

Finding the Fourth Proportional to 1,383,496.80, 1,908,935.28 and 839,918.76

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Solution

The fourth proportional to 1,383,496.80, 1,908,935.28 and 839,918.76 is: 1,158,911.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,496.80 : 1,908,935.28 = 839,918.76 : x
  2. Step 2: Convert to fraction form
    1,383,496.80/1,908,935.28 = 839,918.76/x
  3. Step 3: Cross multiply
    1,383,496.80x = 1,908,935.28 × 839,918.76
  4. Step 4: Simplify right side
    1,383,496.80x = 1,603,350,553,297.85
  5. Step 5: Solve for x
    x = 1,603,350,553,297.85/1,383,496.80
  6. Step 6: Final answer
    x = 1,158,911.65

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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.