Home / 1,213,945.80-1,820,918.70-415,107.60

Finding the Fourth Proportional to 1,213,945.80, 1,820,918.70 and 415,107.60

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Solution

The fourth proportional to 1,213,945.80, 1,820,918.70 and 415,107.60 is: 622,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,945.80 : 1,820,918.70 = 415,107.60 : x
  2. Step 2: Convert to fraction form
    1,213,945.80/1,820,918.70 = 415,107.60/x
  3. Step 3: Cross multiply
    1,213,945.80x = 1,820,918.70 × 415,107.60
  4. Step 4: Simplify right side
    1,213,945.80x = 755,877,191,352.12
  5. Step 5: Solve for x
    x = 755,877,191,352.12/1,213,945.80
  6. Step 6: Final answer
    x = 622,661.40

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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.