Home / 857,858.67-1,285,951.10-408,458.79

Finding the Fourth Proportional to 857,858.67, 1,285,951.10 and 408,458.79

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Solution

The fourth proportional to 857,858.67, 1,285,951.10 and 408,458.79 is: 612,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,858.67 : 1,285,951.10 = 408,458.79 : x
  2. Step 2: Convert to fraction form
    857,858.67/1,285,951.10 = 408,458.79/x
  3. Step 3: Cross multiply
    857,858.67x = 1,285,951.10 × 408,458.79
  4. Step 4: Simplify right side
    857,858.67x = 525,258,028,262.88
  5. Step 5: Solve for x
    x = 525,258,028,262.88/857,858.67
  6. Step 6: Final answer
    x = 612,289.70

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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.