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Finding the Fourth Proportional to 506,999.44, 699,650.76 and 280,640.08

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Solution

The fourth proportional to 506,999.44, 699,650.76 and 280,640.08 is: 387,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,999.44 : 699,650.76 = 280,640.08 : x
  2. Step 2: Convert to fraction form
    506,999.44/699,650.76 = 280,640.08/x
  3. Step 3: Cross multiply
    506,999.44x = 699,650.76 × 280,640.08
  4. Step 4: Simplify right side
    506,999.44x = 196,350,045,258.46
  5. Step 5: Solve for x
    x = 196,350,045,258.46/506,999.44
  6. Step 6: Final answer
    x = 387,278.62

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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.