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Finding the Fourth Proportional to 506,791.56, 699,343.38 and 280,423.56

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Solution

The fourth proportional to 506,791.56, 699,343.38 and 280,423.56 is: 386,968.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,791.56 : 699,343.38 = 280,423.56 : x
  2. Step 2: Convert to fraction form
    506,791.56/699,343.38 = 280,423.56/x
  3. Step 3: Cross multiply
    506,791.56x = 699,343.38 × 280,423.56
  4. Step 4: Simplify right side
    506,791.56x = 196,112,360,282.03
  5. Step 5: Solve for x
    x = 196,112,360,282.03/506,791.56
  6. Step 6: Final answer
    x = 386,968.48

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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.