Home / 1,188,308.52-1,639,866.60-644,444.28

Finding the Fourth Proportional to 1,188,308.52, 1,639,866.60 and 644,444.28

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Solution

The fourth proportional to 1,188,308.52, 1,639,866.60 and 644,444.28 is: 889,333.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,308.52 : 1,639,866.60 = 644,444.28 : x
  2. Step 2: Convert to fraction form
    1,188,308.52/1,639,866.60 = 644,444.28/x
  3. Step 3: Cross multiply
    1,188,308.52x = 1,639,866.60 × 644,444.28
  4. Step 4: Simplify right side
    1,188,308.52x = 1,056,802,650,333.05
  5. Step 5: Solve for x
    x = 1,056,802,650,333.05/1,188,308.52
  6. Step 6: Final answer
    x = 889,333.56

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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.