Home / 857,860.92-1,285,954.47-408,461.04

Finding the Fourth Proportional to 857,860.92, 1,285,954.47 and 408,461.04

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Solution

The fourth proportional to 857,860.92, 1,285,954.47 and 408,461.04 is: 612,293.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,860.92 : 1,285,954.47 = 408,461.04 : x
  2. Step 2: Convert to fraction form
    857,860.92/1,285,954.47 = 408,461.04/x
  3. Step 3: Cross multiply
    857,860.92x = 1,285,954.47 × 408,461.04
  4. Step 4: Simplify right side
    857,860.92x = 525,262,300,208.85
  5. Step 5: Solve for x
    x = 525,262,300,208.85/857,860.92
  6. Step 6: Final answer
    x = 612,293.07

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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.