Home / 820,090.40-1,230,481.20-446,381.60

Finding the Fourth Proportional to 820,090.40, 1,230,481.20 and 446,381.60

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Solution

The fourth proportional to 820,090.40, 1,230,481.20 and 446,381.60 is: 669,760.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,090.40 : 1,230,481.20 = 446,381.60 : x
  2. Step 2: Convert to fraction form
    820,090.40/1,230,481.20 = 446,381.60/x
  3. Step 3: Cross multiply
    820,090.40x = 1,230,481.20 × 446,381.60
  4. Step 4: Simplify right side
    820,090.40x = 549,264,166,825.92
  5. Step 5: Solve for x
    x = 549,264,166,825.92/820,090.40
  6. Step 6: Final answer
    x = 669,760.51

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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.