Home / 1,383,840.80-1,909,463.79-802,930.75

Finding the Fourth Proportional to 1,383,840.80, 1,909,463.79 and 802,930.75

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Solution

The fourth proportional to 1,383,840.80, 1,909,463.79 and 802,930.75 is: 1,107,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,840.80 : 1,909,463.79 = 802,930.75 : x
  2. Step 2: Convert to fraction form
    1,383,840.80/1,909,463.79 = 802,930.75/x
  3. Step 3: Cross multiply
    1,383,840.80x = 1,909,463.79 × 802,930.75
  4. Step 4: Simplify right side
    1,383,840.80x = 1,533,167,199,783.53
  5. Step 5: Solve for x
    x = 1,533,167,199,783.53/1,383,840.80
  6. Step 6: Final answer
    x = 1,107,907.21

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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.