Home / 664,847,999.20-997,271,998.80-658,045,554.40

Finding the Fourth Proportional to 664,847,999.20, 997,271,998.80 and 658,045,554.40

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Solution

The fourth proportional to 664,847,999.20, 997,271,998.80 and 658,045,554.40 is: 987,068,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,847,999.20 : 997,271,998.80 = 658,045,554.40 : x
  2. Step 2: Convert to fraction form
    664,847,999.20/997,271,998.80 = 658,045,554.40/x
  3. Step 3: Cross multiply
    664,847,999.20x = 997,271,998.80 × 658,045,554.40
  4. Step 4: Simplify right side
    664,847,999.20x = 656,250,405,337,942,016
  5. Step 5: Solve for x
    x = 656,250,405,337,942,016/664,847,999.20
  6. Step 6: Final answer
    x = 987,068,331.60

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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.