Home / 664,336.36-916,786.02-396,058.60

Finding the Fourth Proportional to 664,336.36, 916,786.02 and 396,058.60

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Solution

The fourth proportional to 664,336.36, 916,786.02 and 396,058.60 is: 546,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,336.36 : 916,786.02 = 396,058.60 : x
  2. Step 2: Convert to fraction form
    664,336.36/916,786.02 = 396,058.60/x
  3. Step 3: Cross multiply
    664,336.36x = 916,786.02 × 396,058.60
  4. Step 4: Simplify right side
    664,336.36x = 363,100,987,580.77
  5. Step 5: Solve for x
    x = 363,100,987,580.77/664,336.36
  6. Step 6: Final answer
    x = 546,561.97

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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.