Home / 798,847,999.70-1,198,271,999.55-389,693,542.10

Finding the Fourth Proportional to 798,847,999.70, 1,198,271,999.55 and 389,693,542.10

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Solution

The fourth proportional to 798,847,999.70, 1,198,271,999.55 and 389,693,542.10 is: 584,540,313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    798,847,999.70 : 1,198,271,999.55 = 389,693,542.10 : x
  2. Step 2: Convert to fraction form
    798,847,999.70/1,198,271,999.55 = 389,693,542.10/x
  3. Step 3: Cross multiply
    798,847,999.70x = 1,198,271,999.55 × 389,693,542.10
  4. Step 4: Simplify right side
    798,847,999.70x = 466,958,859,903,889,088
  5. Step 5: Solve for x
    x = 466,958,859,903,889,088/798,847,999.70
  6. Step 6: Final answer
    x = 584,540,313.15

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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.