Home / 858,372.20-1,287,731.10-297,290.60

Finding the Fourth Proportional to 858,372.20, 1,287,731.10 and 297,290.60

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Solution

The fourth proportional to 858,372.20, 1,287,731.10 and 297,290.60 is: 445,995.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,372.20 : 1,287,731.10 = 297,290.60 : x
  2. Step 2: Convert to fraction form
    858,372.20/1,287,731.10 = 297,290.60/x
  3. Step 3: Cross multiply
    858,372.20x = 1,287,731.10 × 297,290.60
  4. Step 4: Simplify right side
    858,372.20x = 382,830,351,357.66
  5. Step 5: Solve for x
    x = 382,830,351,357.66/858,372.20
  6. Step 6: Final answer
    x = 445,995.75

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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.