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Finding the Fourth Proportional to 493,399.10, 680,852.74 and 278,560.37

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Solution

The fourth proportional to 493,399.10, 680,852.74 and 278,560.37 is: 384,391.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,399.10 : 680,852.74 = 278,560.37 : x
  2. Step 2: Convert to fraction form
    493,399.10/680,852.74 = 278,560.37/x
  3. Step 3: Cross multiply
    493,399.10x = 680,852.74 × 278,560.37
  4. Step 4: Simplify right side
    493,399.10x = 189,658,587,069.25
  5. Step 5: Solve for x
    x = 189,658,587,069.25/493,399.10
  6. Step 6: Final answer
    x = 384,391.84

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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.