Home / 1,271,999.70-1,907,999.55-768,114.90

Finding the Fourth Proportional to 1,271,999.70, 1,907,999.55 and 768,114.90

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Solution

The fourth proportional to 1,271,999.70, 1,907,999.55 and 768,114.90 is: 1,152,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,999.70 : 1,907,999.55 = 768,114.90 : x
  2. Step 2: Convert to fraction form
    1,271,999.70/1,907,999.55 = 768,114.90/x
  3. Step 3: Cross multiply
    1,271,999.70x = 1,907,999.55 × 768,114.90
  4. Step 4: Simplify right side
    1,271,999.70x = 1,465,562,883,548.30
  5. Step 5: Solve for x
    x = 1,465,562,883,548.30/1,271,999.70
  6. Step 6: Final answer
    x = 1,152,172.35

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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.