Home / 990,422.60-1,481,697.30-858,765.20

Finding the Fourth Proportional to 990,422.60, 1,481,697.30 and 858,765.20

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Solution

The fourth proportional to 990,422.60, 1,481,697.30 and 858,765.20 is: 1,284,734.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,422.60 : 1,481,697.30 = 858,765.20 : x
  2. Step 2: Convert to fraction form
    990,422.60/1,481,697.30 = 858,765.20/x
  3. Step 3: Cross multiply
    990,422.60x = 1,481,697.30 × 858,765.20
  4. Step 4: Simplify right side
    990,422.60x = 1,272,430,078,173.96
  5. Step 5: Solve for x
    x = 1,272,430,078,173.96/990,422.60
  6. Step 6: Final answer
    x = 1,284,734.49

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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.