Home / 1,212,645.40-1,816,999.80-762,560.80

Finding the Fourth Proportional to 1,212,645.40, 1,816,999.80 and 762,560.80

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Solution

The fourth proportional to 1,212,645.40, 1,816,999.80 and 762,560.80 is: 1,142,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,645.40 : 1,816,999.80 = 762,560.80 : x
  2. Step 2: Convert to fraction form
    1,212,645.40/1,816,999.80 = 762,560.80/x
  3. Step 3: Cross multiply
    1,212,645.40x = 1,816,999.80 × 762,560.80
  4. Step 4: Simplify right side
    1,212,645.40x = 1,385,572,821,087.84
  5. Step 5: Solve for x
    x = 1,385,572,821,087.84/1,212,645.40
  6. Step 6: Final answer
    x = 1,142,603.45

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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.