Home / 858,911.60-1,288,367.40-298,002.80

Finding the Fourth Proportional to 858,911.60, 1,288,367.40 and 298,002.80

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Solution

The fourth proportional to 858,911.60, 1,288,367.40 and 298,002.80 is: 447,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,911.60 : 1,288,367.40 = 298,002.80 : x
  2. Step 2: Convert to fraction form
    858,911.60/1,288,367.40 = 298,002.80/x
  3. Step 3: Cross multiply
    858,911.60x = 1,288,367.40 × 298,002.80
  4. Step 4: Simplify right side
    858,911.60x = 383,937,092,628.72
  5. Step 5: Solve for x
    x = 383,937,092,628.72/858,911.60
  6. Step 6: Final answer
    x = 447,004.20

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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.