Home / 1,057,247,998.20-1,585,871,997.30-643,999,476.60

Finding the Fourth Proportional to 1,057,247,998.20, 1,585,871,997.30 and 643,999,476.60

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Solution

The fourth proportional to 1,057,247,998.20, 1,585,871,997.30 and 643,999,476.60 is: 965,999,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057,247,998.20 : 1,585,871,997.30 = 643,999,476.60 : x
  2. Step 2: Convert to fraction form
    1,057,247,998.20/1,585,871,997.30 = 643,999,476.60/x
  3. Step 3: Cross multiply
    1,057,247,998.20x = 1,585,871,997.30 × 643,999,476.60
  4. Step 4: Simplify right side
    1,057,247,998.20x = 1,021,300,736,215,796,608
  5. Step 5: Solve for x
    x = 1,021,300,736,215,796,608/1,057,247,998.20
  6. Step 6: Final answer
    x = 965,999,214.90

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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.