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Finding the Fourth Proportional to 643,676.40, 965,975.40 and 362,895.60

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Solution

The fourth proportional to 643,676.40, 965,975.40 and 362,895.60 is: 544,603.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,676.40 : 965,975.40 = 362,895.60 : x
  2. Step 2: Convert to fraction form
    643,676.40/965,975.40 = 362,895.60/x
  3. Step 3: Cross multiply
    643,676.40x = 965,975.40 × 362,895.60
  4. Step 4: Simplify right side
    643,676.40x = 350,548,222,368.24
  5. Step 5: Solve for x
    x = 350,548,222,368.24/643,676.40
  6. Step 6: Final answer
    x = 544,603.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.