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Finding the Fourth Proportional to 1,295,751.53, 1,945,314.93 and 871,189.22

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Solution

The fourth proportional to 1,295,751.53, 1,945,314.93 and 871,189.22 is: 1,307,918.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,751.53 : 1,945,314.93 = 871,189.22 : x
  2. Step 2: Convert to fraction form
    1,295,751.53/1,945,314.93 = 871,189.22/x
  3. Step 3: Cross multiply
    1,295,751.53x = 1,945,314.93 × 871,189.22
  4. Step 4: Simplify right side
    1,295,751.53x = 1,694,737,404,651.30
  5. Step 5: Solve for x
    x = 1,694,737,404,651.30/1,295,751.53
  6. Step 6: Final answer
    x = 1,307,918.50

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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.