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Finding the Fourth Proportional to 640,940.09, 884,461.32 and 350,494.01

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Solution

The fourth proportional to 640,940.09, 884,461.32 and 350,494.01 is: 483,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,940.09 : 884,461.32 = 350,494.01 : x
  2. Step 2: Convert to fraction form
    640,940.09/884,461.32 = 350,494.01/x
  3. Step 3: Cross multiply
    640,940.09x = 884,461.32 × 350,494.01
  4. Step 4: Simplify right side
    640,940.09x = 309,998,394,736.69
  5. Step 5: Solve for x
    x = 309,998,394,736.69/640,940.09
  6. Step 6: Final answer
    x = 483,662.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.