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Finding the Fourth Proportional to 402,588.60, 605,049.30 and 395,590.20

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Solution

The fourth proportional to 402,588.60, 605,049.30 and 395,590.20 is: 594,531.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,588.60 : 605,049.30 = 395,590.20 : x
  2. Step 2: Convert to fraction form
    402,588.60/605,049.30 = 395,590.20/x
  3. Step 3: Cross multiply
    402,588.60x = 605,049.30 × 395,590.20
  4. Step 4: Simplify right side
    402,588.60x = 239,351,573,596.86
  5. Step 5: Solve for x
    x = 239,351,573,596.86/402,588.60
  6. Step 6: Final answer
    x = 594,531.42

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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.