Home / 643,930.80-965,896.20-616,628.40

Finding the Fourth Proportional to 643,930.80, 965,896.20 and 616,628.40

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Solution

The fourth proportional to 643,930.80, 965,896.20 and 616,628.40 is: 924,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,930.80 : 965,896.20 = 616,628.40 : x
  2. Step 2: Convert to fraction form
    643,930.80/965,896.20 = 616,628.40/x
  3. Step 3: Cross multiply
    643,930.80x = 965,896.20 × 616,628.40
  4. Step 4: Simplify right side
    643,930.80x = 595,599,028,372.08
  5. Step 5: Solve for x
    x = 595,599,028,372.08/643,930.80
  6. Step 6: Final answer
    x = 924,942.60

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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.