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Finding the Fourth Proportional to 391,523.60, 586,410.60 and 321,539.60

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Solution

The fourth proportional to 391,523.60, 586,410.60 and 321,539.60 is: 481,590.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,523.60 : 586,410.60 = 321,539.60 : x
  2. Step 2: Convert to fraction form
    391,523.60/586,410.60 = 321,539.60/x
  3. Step 3: Cross multiply
    391,523.60x = 586,410.60 × 321,539.60
  4. Step 4: Simplify right side
    391,523.60x = 188,554,229,759.76
  5. Step 5: Solve for x
    x = 188,554,229,759.76/391,523.60
  6. Step 6: Final answer
    x = 481,590.97

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1.5x scale

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.