Home / 558,115.20-836,654.40-389,635.20

Finding the Fourth Proportional to 558,115.20, 836,654.40 and 389,635.20

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Solution

The fourth proportional to 558,115.20, 836,654.40 and 389,635.20 is: 584,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,115.20 : 836,654.40 = 389,635.20 : x
  2. Step 2: Convert to fraction form
    558,115.20/836,654.40 = 389,635.20/x
  3. Step 3: Cross multiply
    558,115.20x = 836,654.40 × 389,635.20
  4. Step 4: Simplify right side
    558,115.20x = 325,990,004,474.88
  5. Step 5: Solve for x
    x = 325,990,004,474.88/558,115.20
  6. Step 6: Final answer
    x = 584,090.89

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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.