Home / 839,807,998.80-1,259,711,998.20-622,129,765.20

Finding the Fourth Proportional to 839,807,998.80, 1,259,711,998.20 and 622,129,765.20

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Solution

The fourth proportional to 839,807,998.80, 1,259,711,998.20 and 622,129,765.20 is: 933,194,647.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,807,998.80 : 1,259,711,998.20 = 622,129,765.20 : x
  2. Step 2: Convert to fraction form
    839,807,998.80/1,259,711,998.20 = 622,129,765.20/x
  3. Step 3: Cross multiply
    839,807,998.80x = 1,259,711,998.20 × 622,129,765.20
  4. Step 4: Simplify right side
    839,807,998.80x = 783,704,329,659,788,928
  5. Step 5: Solve for x
    x = 783,704,329,659,788,928/839,807,998.80
  6. Step 6: Final answer
    x = 933,194,647.80

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1.5x scale

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.