Home / 857,847.61-1,285,934.64-408,447.73

Finding the Fourth Proportional to 857,847.61, 1,285,934.64 and 408,447.73

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Solution

The fourth proportional to 857,847.61, 1,285,934.64 and 408,447.73 is: 612,273.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,847.61 : 1,285,934.64 = 408,447.73 : x
  2. Step 2: Convert to fraction form
    857,847.61/1,285,934.64 = 408,447.73/x
  3. Step 3: Cross multiply
    857,847.61x = 1,285,934.64 × 408,447.73
  4. Step 4: Simplify right side
    857,847.61x = 525,237,084,636.37
  5. Step 5: Solve for x
    x = 525,237,084,636.37/857,847.61
  6. Step 6: Final answer
    x = 612,273.18

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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.