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Finding the Fourth Proportional to 664,009,489.70, 996,014,234.55 and 654,939,563.30

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Solution

The fourth proportional to 664,009,489.70, 996,014,234.55 and 654,939,563.30 is: 982,409,344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,009,489.70 : 996,014,234.55 = 654,939,563.30 : x
  2. Step 2: Convert to fraction form
    664,009,489.70/996,014,234.55 = 654,939,563.30/x
  3. Step 3: Cross multiply
    664,009,489.70x = 996,014,234.55 × 654,939,563.30
  4. Step 4: Simplify right side
    664,009,489.70x = 652,329,127,816,760,704
  5. Step 5: Solve for x
    x = 652,329,127,816,760,704/664,009,489.70
  6. Step 6: Final answer
    x = 982,409,344.95

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Double scale
Find fourth proportional to 664,009,490.70, 996,014,236.05 and 654,939,564.30
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.