Home / 1,219,311.36-1,830,101.87-620,720.64

Finding the Fourth Proportional to 1,219,311.36, 1,830,101.87 and 620,720.64

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Solution

The fourth proportional to 1,219,311.36, 1,830,101.87 and 620,720.64 is: 931,658.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,311.36 : 1,830,101.87 = 620,720.64 : x
  2. Step 2: Convert to fraction form
    1,219,311.36/1,830,101.87 = 620,720.64/x
  3. Step 3: Cross multiply
    1,219,311.36x = 1,830,101.87 × 620,720.64
  4. Step 4: Simplify right side
    1,219,311.36x = 1,135,982,004,011.60
  5. Step 5: Solve for x
    x = 1,135,982,004,011.60/1,219,311.36
  6. Step 6: Final answer
    x = 931,658.67

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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.