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Finding the Fourth Proportional to 570,548.80, 856,437.60 and 321,716.80

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Solution

The fourth proportional to 570,548.80, 856,437.60 and 321,716.80 is: 482,921.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,548.80 : 856,437.60 = 321,716.80 : x
  2. Step 2: Convert to fraction form
    570,548.80/856,437.60 = 321,716.80/x
  3. Step 3: Cross multiply
    570,548.80x = 856,437.60 × 321,716.80
  4. Step 4: Simplify right side
    570,548.80x = 275,530,364,071.68
  5. Step 5: Solve for x
    x = 275,530,364,071.68/570,548.80
  6. Step 6: Final answer
    x = 482,921.64

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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.