Home / 1,867,419.20-2,801,128.80-1,855,609.40

Finding the Fourth Proportional to 1,867,419.20, 2,801,128.80 and 1,855,609.40

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Solution

The fourth proportional to 1,867,419.20, 2,801,128.80 and 1,855,609.40 is: 2,783,414.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867,419.20 : 2,801,128.80 = 1,855,609.40 : x
  2. Step 2: Convert to fraction form
    1,867,419.20/2,801,128.80 = 1,855,609.40/x
  3. Step 3: Cross multiply
    1,867,419.20x = 2,801,128.80 × 1,855,609.40
  4. Step 4: Simplify right side
    1,867,419.20x = 5,197,800,931,890.72
  5. Step 5: Solve for x
    x = 5,197,800,931,890.72/1,867,419.20
  6. Step 6: Final answer
    x = 2,783,414.10

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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.