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Finding the Fourth Proportional to 668,893.60, 1,003,340.40 and 219,683.80

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Solution

The fourth proportional to 668,893.60, 1,003,340.40 and 219,683.80 is: 329,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,893.60 : 1,003,340.40 = 219,683.80 : x
  2. Step 2: Convert to fraction form
    668,893.60/1,003,340.40 = 219,683.80/x
  3. Step 3: Cross multiply
    668,893.60x = 1,003,340.40 × 219,683.80
  4. Step 4: Simplify right side
    668,893.60x = 220,417,631,765.52
  5. Step 5: Solve for x
    x = 220,417,631,765.52/668,893.60
  6. Step 6: Final answer
    x = 329,525.70

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Similar ratio
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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.