Home / 1,213,897.20-1,820,845.80-415,204.80

Finding the Fourth Proportional to 1,213,897.20, 1,820,845.80 and 415,204.80

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Solution

The fourth proportional to 1,213,897.20, 1,820,845.80 and 415,204.80 is: 622,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,897.20 : 1,820,845.80 = 415,204.80 : x
  2. Step 2: Convert to fraction form
    1,213,897.20/1,820,845.80 = 415,204.80/x
  3. Step 3: Cross multiply
    1,213,897.20x = 1,820,845.80 × 415,204.80
  4. Step 4: Simplify right side
    1,213,897.20x = 756,023,916,219.84
  5. Step 5: Solve for x
    x = 756,023,916,219.84/1,213,897.20
  6. Step 6: Final answer
    x = 622,807.20

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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.