Home / 839,807,996.80-1,259,711,995.20-809,196,995.20

Finding the Fourth Proportional to 839,807,996.80, 1,259,711,995.20 and 809,196,995.20

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Solution

The fourth proportional to 839,807,996.80, 1,259,711,995.20 and 809,196,995.20 is: 1,213,795,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,807,996.80 : 1,259,711,995.20 = 809,196,995.20 : x
  2. Step 2: Convert to fraction form
    839,807,996.80/1,259,711,995.20 = 809,196,995.20/x
  3. Step 3: Cross multiply
    839,807,996.80x = 1,259,711,995.20 × 809,196,995.20
  4. Step 4: Simplify right side
    839,807,996.80x = 1,019,355,161,333,236,864
  5. Step 5: Solve for x
    x = 1,019,355,161,333,236,864/839,807,996.80
  6. Step 6: Final answer
    x = 1,213,795,492.80

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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.