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Finding the Fourth Proportional to 641,830.36, 962,433.66 and 321,844.84

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Solution

The fourth proportional to 641,830.36, 962,433.66 and 321,844.84 is: 482,610.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,830.36 : 962,433.66 = 321,844.84 : x
  2. Step 2: Convert to fraction form
    641,830.36/962,433.66 = 321,844.84/x
  3. Step 3: Cross multiply
    641,830.36x = 962,433.66 × 321,844.84
  4. Step 4: Simplify right side
    641,830.36x = 309,754,307,313.31
  5. Step 5: Solve for x
    x = 309,754,307,313.31/641,830.36
  6. Step 6: Final answer
    x = 482,610.87

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1.5x scale

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.