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Finding the Fourth Proportional to 640,071.44, 883,351.40 and 368,227.60

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Solution

The fourth proportional to 640,071.44, 883,351.40 and 368,227.60 is: 508,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,071.44 : 883,351.40 = 368,227.60 : x
  2. Step 2: Convert to fraction form
    640,071.44/883,351.40 = 368,227.60/x
  3. Step 3: Cross multiply
    640,071.44x = 883,351.40 × 368,227.60
  4. Step 4: Simplify right side
    640,071.44x = 325,274,365,978.64
  5. Step 5: Solve for x
    x = 325,274,365,978.64/640,071.44
  6. Step 6: Final answer
    x = 508,184.47

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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.