Home / 1,383,260.80-1,908,914.40-779,648.80

Finding the Fourth Proportional to 1,383,260.80, 1,908,914.40 and 779,648.80

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Solution

The fourth proportional to 1,383,260.80, 1,908,914.40 and 779,648.80 is: 1,075,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,260.80 : 1,908,914.40 = 779,648.80 : x
  2. Step 2: Convert to fraction form
    1,383,260.80/1,908,914.40 = 779,648.80/x
  3. Step 3: Cross multiply
    1,383,260.80x = 1,908,914.40 × 779,648.80
  4. Step 4: Simplify right side
    1,383,260.80x = 1,488,282,821,262.72
  5. Step 5: Solve for x
    x = 1,488,282,821,262.72/1,383,260.80
  6. Step 6: Final answer
    x = 1,075,923.51

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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.