Home / 857,954.94-1,286,941.60-258,921.47

Finding the Fourth Proportional to 857,954.94, 1,286,941.60 and 258,921.47

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Solution

The fourth proportional to 857,954.94, 1,286,941.60 and 258,921.47 is: 388,384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,954.94 : 1,286,941.60 = 258,921.47 : x
  2. Step 2: Convert to fraction form
    857,954.94/1,286,941.60 = 258,921.47/x
  3. Step 3: Cross multiply
    857,954.94x = 1,286,941.60 × 258,921.47
  4. Step 4: Simplify right side
    857,954.94x = 333,216,810,876.15
  5. Step 5: Solve for x
    x = 333,216,810,876.15/857,954.94
  6. Step 6: Final answer
    x = 388,384.98

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1.5x scale

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.