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Finding the Fourth Proportional to 855,857.80, 1,283,441.10 and 294,603.40

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Solution

The fourth proportional to 855,857.80, 1,283,441.10 and 294,603.40 is: 441,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,857.80 : 1,283,441.10 = 294,603.40 : x
  2. Step 2: Convert to fraction form
    855,857.80/1,283,441.10 = 294,603.40/x
  3. Step 3: Cross multiply
    855,857.80x = 1,283,441.10 × 294,603.40
  4. Step 4: Simplify right side
    855,857.80x = 378,106,111,759.74
  5. Step 5: Solve for x
    x = 378,106,111,759.74/855,857.80
  6. Step 6: Final answer
    x = 441,786.14

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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.