Home / 1,380,467.70-2,070,701.55-1,320,246.90

Finding the Fourth Proportional to 1,380,467.70, 2,070,701.55 and 1,320,246.90

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Solution

The fourth proportional to 1,380,467.70, 2,070,701.55 and 1,320,246.90 is: 1,980,370.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,467.70 : 2,070,701.55 = 1,320,246.90 : x
  2. Step 2: Convert to fraction form
    1,380,467.70/2,070,701.55 = 1,320,246.90/x
  3. Step 3: Cross multiply
    1,380,467.70x = 2,070,701.55 × 1,320,246.90
  4. Step 4: Simplify right side
    1,380,467.70x = 2,733,837,302,212.69
  5. Step 5: Solve for x
    x = 2,733,837,302,212.69/1,380,467.70
  6. Step 6: Final answer
    x = 1,980,370.35

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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.