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Finding the Fourth Proportional to 498,999.90, 748,969.65 and 262,512.30

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Solution

The fourth proportional to 498,999.90, 748,969.65 and 262,512.30 is: 394,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,999.90 : 748,969.65 = 262,512.30 : x
  2. Step 2: Convert to fraction form
    498,999.90/748,969.65 = 262,512.30/x
  3. Step 3: Cross multiply
    498,999.90x = 748,969.65 × 262,512.30
  4. Step 4: Simplify right side
    498,999.90x = 196,613,745,451.70
  5. Step 5: Solve for x
    x = 196,613,745,451.70/498,999.90
  6. Step 6: Final answer
    x = 394,015.60

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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.