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Finding the Fourth Proportional to 500,968, 751,495.74 and 126,991

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Solution

The fourth proportional to 500,968, 751,495.74 and 126,991 is: 190,497.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,968 : 751,495.74 = 126,991 : x
  2. Step 2: Convert to fraction form
    500,968/751,495.74 = 126,991/x
  3. Step 3: Cross multiply
    500,968x = 751,495.74 × 126,991
  4. Step 4: Simplify right side
    500,968x = 95,433,195,518.34
  5. Step 5: Solve for x
    x = 95,433,195,518.34/500,968
  6. Step 6: Final answer
    x = 190,497.59

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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.