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Finding the Fourth Proportional to 422,457.54, 633,715.47 and 122,940.60

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Solution

The fourth proportional to 422,457.54, 633,715.47 and 122,940.60 is: 184,419.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,457.54 : 633,715.47 = 122,940.60 : x
  2. Step 2: Convert to fraction form
    422,457.54/633,715.47 = 122,940.60/x
  3. Step 3: Cross multiply
    422,457.54x = 633,715.47 × 122,940.60
  4. Step 4: Simplify right side
    422,457.54x = 77,909,360,111.08
  5. Step 5: Solve for x
    x = 77,909,360,111.08/422,457.54
  6. Step 6: Final answer
    x = 184,419.39

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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.