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Finding the Fourth Proportional to 390,690.54, 588,964.17 and 364,650.52

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Solution

The fourth proportional to 390,690.54, 588,964.17 and 364,650.52 is: 549,708.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,690.54 : 588,964.17 = 364,650.52 : x
  2. Step 2: Convert to fraction form
    390,690.54/588,964.17 = 364,650.52/x
  3. Step 3: Cross multiply
    390,690.54x = 588,964.17 × 364,650.52
  4. Step 4: Simplify right side
    390,690.54x = 214,766,089,028.62
  5. Step 5: Solve for x
    x = 214,766,089,028.62/390,690.54
  6. Step 6: Final answer
    x = 549,708.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.