Home / 858,370.20-1,287,728.10-297,288.60

Finding the Fourth Proportional to 858,370.20, 1,287,728.10 and 297,288.60

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Solution

The fourth proportional to 858,370.20, 1,287,728.10 and 297,288.60 is: 445,992.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,370.20 : 1,287,728.10 = 297,288.60 : x
  2. Step 2: Convert to fraction form
    858,370.20/1,287,728.10 = 297,288.60/x
  3. Step 3: Cross multiply
    858,370.20x = 1,287,728.10 × 297,288.60
  4. Step 4: Simplify right side
    858,370.20x = 382,826,884,029.66
  5. Step 5: Solve for x
    x = 382,826,884,029.66/858,370.20
  6. Step 6: Final answer
    x = 445,992.75

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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.