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Finding the Fourth Proportional to 404,628.80, 607,634.40 and 218,004.80

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Solution

The fourth proportional to 404,628.80, 607,634.40 and 218,004.80 is: 327,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,628.80 : 607,634.40 = 218,004.80 : x
  2. Step 2: Convert to fraction form
    404,628.80/607,634.40 = 218,004.80/x
  3. Step 3: Cross multiply
    404,628.80x = 607,634.40 × 218,004.80
  4. Step 4: Simplify right side
    404,628.80x = 132,467,215,845.12
  5. Step 5: Solve for x
    x = 132,467,215,845.12/404,628.80
  6. Step 6: Final answer
    x = 327,379.60

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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.