Home / 839,807,998.20-1,259,711,997.30-686,752,990.20

Finding the Fourth Proportional to 839,807,998.20, 1,259,711,997.30 and 686,752,990.20

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Solution

The fourth proportional to 839,807,998.20, 1,259,711,997.30 and 686,752,990.20 is: 1,030,129,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,807,998.20 : 1,259,711,997.30 = 686,752,990.20 : x
  2. Step 2: Convert to fraction form
    839,807,998.20/1,259,711,997.30 = 686,752,990.20/x
  3. Step 3: Cross multiply
    839,807,998.20x = 1,259,711,997.30 × 686,752,990.20
  4. Step 4: Simplify right side
    839,807,998.20x = 865,110,980,936,589,312
  5. Step 5: Solve for x
    x = 865,110,980,936,589,312/839,807,998.20
  6. Step 6: Final answer
    x = 1,030,129,485.30

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Similar ratio
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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.