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Finding the Fourth Proportional to 508,791.89, 702,134.21 and 279,364.04

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Solution

The fourth proportional to 508,791.89, 702,134.21 and 279,364.04 is: 385,523.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,791.89 : 702,134.21 = 279,364.04 : x
  2. Step 2: Convert to fraction form
    508,791.89/702,134.21 = 279,364.04/x
  3. Step 3: Cross multiply
    508,791.89x = 702,134.21 × 279,364.04
  4. Step 4: Simplify right side
    508,791.89x = 196,151,049,527.81
  5. Step 5: Solve for x
    x = 196,151,049,527.81/508,791.89
  6. Step 6: Final answer
    x = 385,523.14

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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.