Home / 857,920.50-1,286,848.44-258,865.74

Finding the Fourth Proportional to 857,920.50, 1,286,848.44 and 258,865.74

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Solution

The fourth proportional to 857,920.50, 1,286,848.44 and 258,865.74 is: 388,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,920.50 : 1,286,848.44 = 258,865.74 : x
  2. Step 2: Convert to fraction form
    857,920.50/1,286,848.44 = 258,865.74/x
  3. Step 3: Cross multiply
    857,920.50x = 1,286,848.44 × 258,865.74
  4. Step 4: Simplify right side
    857,920.50x = 333,120,973,688.45
  5. Step 5: Solve for x
    x = 333,120,973,688.45/857,920.50
  6. Step 6: Final answer
    x = 388,288.86

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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.