Home / 1,378,296-1,902,165.12-774,800.64

Finding the Fourth Proportional to 1,378,296, 1,902,165.12 and 774,800.64

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Solution

The fourth proportional to 1,378,296, 1,902,165.12 and 774,800.64 is: 1,069,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,296 : 1,902,165.12 = 774,800.64 : x
  2. Step 2: Convert to fraction form
    1,378,296/1,902,165.12 = 774,800.64/x
  3. Step 3: Cross multiply
    1,378,296x = 1,902,165.12 × 774,800.64
  4. Step 4: Simplify right side
    1,378,296x = 1,473,798,752,361.68
  5. Step 5: Solve for x
    x = 1,473,798,752,361.68/1,378,296
  6. Step 6: Final answer
    x = 1,069,290.45

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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.