Home / 1,219,311.37-1,830,101.87-620,720.65

Finding the Fourth Proportional to 1,219,311.37, 1,830,101.87 and 620,720.65

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Solution

The fourth proportional to 1,219,311.37, 1,830,101.87 and 620,720.65 is: 931,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,311.37 : 1,830,101.87 = 620,720.65 : x
  2. Step 2: Convert to fraction form
    1,219,311.37/1,830,101.87 = 620,720.65/x
  3. Step 3: Cross multiply
    1,219,311.37x = 1,830,101.87 × 620,720.65
  4. Step 4: Simplify right side
    1,219,311.37x = 1,135,982,022,312.62
  5. Step 5: Solve for x
    x = 1,135,982,022,312.62/1,219,311.37
  6. Step 6: Final answer
    x = 931,658.68

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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.