Home / 505,074.12-696,998.86-278,719.64

Finding the Fourth Proportional to 505,074.12, 696,998.86 and 278,719.64

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Solution

The fourth proportional to 505,074.12, 696,998.86 and 278,719.64 is: 384,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,074.12 : 696,998.86 = 278,719.64 : x
  2. Step 2: Convert to fraction form
    505,074.12/696,998.86 = 278,719.64/x
  3. Step 3: Cross multiply
    505,074.12x = 696,998.86 × 278,719.64
  4. Step 4: Simplify right side
    505,074.12x = 194,267,271,339.61
  5. Step 5: Solve for x
    x = 194,267,271,339.61/505,074.12
  6. Step 6: Final answer
    x = 384,631.21

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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.