Home / 525,091.20-787,636.80-258,979.20

Finding the Fourth Proportional to 525,091.20, 787,636.80 and 258,979.20

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Solution

The fourth proportional to 525,091.20, 787,636.80 and 258,979.20 is: 388,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,091.20 : 787,636.80 = 258,979.20 : x
  2. Step 2: Convert to fraction form
    525,091.20/787,636.80 = 258,979.20/x
  3. Step 3: Cross multiply
    525,091.20x = 787,636.80 × 258,979.20
  4. Step 4: Simplify right side
    525,091.20x = 203,981,548,354.56
  5. Step 5: Solve for x
    x = 203,981,548,354.56/525,091.20
  6. Step 6: Final answer
    x = 388,468.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.