Home / 1,291,536.72-1,937,599.92-393,105.78

Finding the Fourth Proportional to 1,291,536.72, 1,937,599.92 and 393,105.78

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Solution

The fourth proportional to 1,291,536.72, 1,937,599.92 and 393,105.78 is: 589,748.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,536.72 : 1,937,599.92 = 393,105.78 : x
  2. Step 2: Convert to fraction form
    1,291,536.72/1,937,599.92 = 393,105.78/x
  3. Step 3: Cross multiply
    1,291,536.72x = 1,937,599.92 × 393,105.78
  4. Step 4: Simplify right side
    1,291,536.72x = 761,681,727,879.54
  5. Step 5: Solve for x
    x = 761,681,727,879.54/1,291,536.72
  6. Step 6: Final answer
    x = 589,748.41

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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.