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Finding the Fourth Proportional to 617,491.42, 926,236.06 and 318,057.60

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Solution

The fourth proportional to 617,491.42, 926,236.06 and 318,057.60 is: 477,085.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,491.42 : 926,236.06 = 318,057.60 : x
  2. Step 2: Convert to fraction form
    617,491.42/926,236.06 = 318,057.60/x
  3. Step 3: Cross multiply
    617,491.42x = 926,236.06 × 318,057.60
  4. Step 4: Simplify right side
    617,491.42x = 294,596,422,744.37
  5. Step 5: Solve for x
    x = 294,596,422,744.37/617,491.42
  6. Step 6: Final answer
    x = 477,085.86

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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.