Home / 991,334.36-1,368,015.60-561,603.44

Finding the Fourth Proportional to 991,334.36, 1,368,015.60 and 561,603.44

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Solution

The fourth proportional to 991,334.36, 1,368,015.60 and 561,603.44 is: 774,998.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,334.36 : 1,368,015.60 = 561,603.44 : x
  2. Step 2: Convert to fraction form
    991,334.36/1,368,015.60 = 561,603.44/x
  3. Step 3: Cross multiply
    991,334.36x = 1,368,015.60 × 561,603.44
  4. Step 4: Simplify right side
    991,334.36x = 768,282,266,933.66
  5. Step 5: Solve for x
    x = 768,282,266,933.66/991,334.36
  6. Step 6: Final answer
    x = 774,998.12

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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.