Home / 1,239,135.21-1,857,620.25-480,453.98

Finding the Fourth Proportional to 1,239,135.21, 1,857,620.25 and 480,453.98

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Solution

The fourth proportional to 1,239,135.21, 1,857,620.25 and 480,453.98 is: 720,261.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,135.21 : 1,857,620.25 = 480,453.98 : x
  2. Step 2: Convert to fraction form
    1,239,135.21/1,857,620.25 = 480,453.98/x
  3. Step 3: Cross multiply
    1,239,135.21x = 1,857,620.25 × 480,453.98
  4. Step 4: Simplify right side
    1,239,135.21x = 892,501,033,152.99
  5. Step 5: Solve for x
    x = 892,501,033,152.99/1,239,135.21
  6. Step 6: Final answer
    x = 720,261.22

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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.