Home / 643,935.54-888,672.40-372,015.02

Finding the Fourth Proportional to 643,935.54, 888,672.40 and 372,015.02

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Solution

The fourth proportional to 643,935.54, 888,672.40 and 372,015.02 is: 513,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,935.54 : 888,672.40 = 372,015.02 : x
  2. Step 2: Convert to fraction form
    643,935.54/888,672.40 = 372,015.02/x
  3. Step 3: Cross multiply
    643,935.54x = 888,672.40 × 372,015.02
  4. Step 4: Simplify right side
    643,935.54x = 330,599,480,659.45
  5. Step 5: Solve for x
    x = 330,599,480,659.45/643,935.54
  6. Step 6: Final answer
    x = 513,404.62

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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.