Home / 1,338,908.70-2,007,729.45-778,115.10

Finding the Fourth Proportional to 1,338,908.70, 2,007,729.45 and 778,115.10

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Solution

The fourth proportional to 1,338,908.70, 2,007,729.45 and 778,115.10 is: 1,166,804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,908.70 : 2,007,729.45 = 778,115.10 : x
  2. Step 2: Convert to fraction form
    1,338,908.70/2,007,729.45 = 778,115.10/x
  3. Step 3: Cross multiply
    1,338,908.70x = 2,007,729.45 × 778,115.10
  4. Step 4: Simplify right side
    1,338,908.70x = 1,562,244,601,759.69
  5. Step 5: Solve for x
    x = 1,562,244,601,759.69/1,338,908.70
  6. Step 6: Final answer
    x = 1,166,804.43

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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.