Home / 1,188,628.29-1,640,301.66-644,764.32

Finding the Fourth Proportional to 1,188,628.29, 1,640,301.66 and 644,764.32

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Solution

The fourth proportional to 1,188,628.29, 1,640,301.66 and 644,764.32 is: 889,771.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,628.29 : 1,640,301.66 = 644,764.32 : x
  2. Step 2: Convert to fraction form
    1,188,628.29/1,640,301.66 = 644,764.32/x
  3. Step 3: Cross multiply
    1,188,628.29x = 1,640,301.66 × 644,764.32
  4. Step 4: Simplify right side
    1,188,628.29x = 1,057,607,984,404.77
  5. Step 5: Solve for x
    x = 1,057,607,984,404.77/1,188,628.29
  6. Step 6: Final answer
    x = 889,771.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.