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Finding the Fourth Proportional to 493,362.80, 680,972.16 and 278,628.56

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Solution

The fourth proportional to 493,362.80, 680,972.16 and 278,628.56 is: 384,581.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,362.80 : 680,972.16 = 278,628.56 : x
  2. Step 2: Convert to fraction form
    493,362.80/680,972.16 = 278,628.56/x
  3. Step 3: Cross multiply
    493,362.80x = 680,972.16 × 278,628.56
  4. Step 4: Simplify right side
    493,362.80x = 189,738,292,340.89
  5. Step 5: Solve for x
    x = 189,738,292,340.89/493,362.80
  6. Step 6: Final answer
    x = 384,581.68

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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.