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Finding the Fourth Proportional to 556,628.76, 768,147.96 and 301,979.88

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Solution

The fourth proportional to 556,628.76, 768,147.96 and 301,979.88 is: 416,732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,628.76 : 768,147.96 = 301,979.88 : x
  2. Step 2: Convert to fraction form
    556,628.76/768,147.96 = 301,979.88/x
  3. Step 3: Cross multiply
    556,628.76x = 768,147.96 × 301,979.88
  4. Step 4: Simplify right side
    556,628.76x = 231,965,228,783.05
  5. Step 5: Solve for x
    x = 231,965,228,783.05/556,628.76
  6. Step 6: Final answer
    x = 416,732.38

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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.