Home / 1,276,015.40-1,914,023.10-644,847.20

Finding the Fourth Proportional to 1,276,015.40, 1,914,023.10 and 644,847.20

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Solution

The fourth proportional to 1,276,015.40, 1,914,023.10 and 644,847.20 is: 967,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,015.40 : 1,914,023.10 = 644,847.20 : x
  2. Step 2: Convert to fraction form
    1,276,015.40/1,914,023.10 = 644,847.20/x
  3. Step 3: Cross multiply
    1,276,015.40x = 1,914,023.10 × 644,847.20
  4. Step 4: Simplify right side
    1,276,015.40x = 1,234,252,436,770.32
  5. Step 5: Solve for x
    x = 1,234,252,436,770.32/1,276,015.40
  6. Step 6: Final answer
    x = 967,270.80

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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.