Home / 1,188,633.64-1,640,307.36-644,770.48

Finding the Fourth Proportional to 1,188,633.64, 1,640,307.36 and 644,770.48

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Solution

The fourth proportional to 1,188,633.64, 1,640,307.36 and 644,770.48 is: 889,779.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,633.64 : 1,640,307.36 = 644,770.48 : x
  2. Step 2: Convert to fraction form
    1,188,633.64/1,640,307.36 = 644,770.48/x
  3. Step 3: Cross multiply
    1,188,633.64x = 1,640,307.36 × 644,770.48
  4. Step 4: Simplify right side
    1,188,633.64x = 1,057,621,763,854.73
  5. Step 5: Solve for x
    x = 1,057,621,763,854.73/1,188,633.64
  6. Step 6: Final answer
    x = 889,779.43

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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.