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Finding the Fourth Proportional to 570,664.80, 856,611.60 and 321,832.80

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Solution

The fourth proportional to 570,664.80, 856,611.60 and 321,832.80 is: 483,095.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,664.80 : 856,611.60 = 321,832.80 : x
  2. Step 2: Convert to fraction form
    570,664.80/856,611.60 = 321,832.80/x
  3. Step 3: Cross multiply
    570,664.80x = 856,611.60 × 321,832.80
  4. Step 4: Simplify right side
    570,664.80x = 275,685,709,740.48
  5. Step 5: Solve for x
    x = 275,685,709,740.48/570,664.80
  6. Step 6: Final answer
    x = 483,095.70

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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.