Home / 644,147.30-965,443.35-328,441.70

Finding the Fourth Proportional to 644,147.30, 965,443.35 and 328,441.70

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Solution

The fourth proportional to 644,147.30, 965,443.35 and 328,441.70 is: 492,266.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,147.30 : 965,443.35 = 328,441.70 : x
  2. Step 2: Convert to fraction form
    644,147.30/965,443.35 = 328,441.70/x
  3. Step 3: Cross multiply
    644,147.30x = 965,443.35 × 328,441.70
  4. Step 4: Simplify right side
    644,147.30x = 317,091,855,127.70
  5. Step 5: Solve for x
    x = 317,091,855,127.70/644,147.30
  6. Step 6: Final answer
    x = 492,266.06

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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.