Home / 1,538,536.80-2,308,231.80-640,401.60

Finding the Fourth Proportional to 1,538,536.80, 2,308,231.80 and 640,401.60

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Solution

The fourth proportional to 1,538,536.80, 2,308,231.80 and 640,401.60 is: 960,779.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,536.80 : 2,308,231.80 = 640,401.60 : x
  2. Step 2: Convert to fraction form
    1,538,536.80/2,308,231.80 = 640,401.60/x
  3. Step 3: Cross multiply
    1,538,536.80x = 2,308,231.80 × 640,401.60
  4. Step 4: Simplify right side
    1,538,536.80x = 1,478,195,337,890.88
  5. Step 5: Solve for x
    x = 1,478,195,337,890.88/1,538,536.80
  6. Step 6: Final answer
    x = 960,779.97

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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.