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Finding the Fourth Proportional to 664,245.90, 996,466.05 and 348,726.60

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Solution

The fourth proportional to 664,245.90, 996,466.05 and 348,726.60 is: 523,140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,245.90 : 996,466.05 = 348,726.60 : x
  2. Step 2: Convert to fraction form
    664,245.90/996,466.05 = 348,726.60/x
  3. Step 3: Cross multiply
    664,245.90x = 996,466.05 × 348,726.60
  4. Step 4: Simplify right side
    664,245.90x = 347,494,217,631.93
  5. Step 5: Solve for x
    x = 347,494,217,631.93/664,245.90
  6. Step 6: Final answer
    x = 523,140.93

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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.