Home / 777,947,612.01-1,073,570,939.09-420,715,388.64

Finding the Fourth Proportional to 777,947,612.01, 1,073,570,939.09 and 420,715,388.64

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Solution

The fourth proportional to 777,947,612.01, 1,073,570,939.09 and 420,715,388.64 is: 580,588,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,947,612.01 : 1,073,570,939.09 = 420,715,388.64 : x
  2. Step 2: Convert to fraction form
    777,947,612.01/1,073,570,939.09 = 420,715,388.64/x
  3. Step 3: Cross multiply
    777,947,612.01x = 1,073,570,939.09 × 420,715,388.64
  4. Step 4: Simplify right side
    777,947,612.01x = 451,667,814,871,859,136
  5. Step 5: Solve for x
    x = 451,667,814,871,859,136/777,947,612.01
  6. Step 6: Final answer
    x = 580,588,985.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.