Home / 613,780,621.32-921,252,992.94-379,903,876.80

Finding the Fourth Proportional to 613,780,621.32, 921,252,992.94 and 379,903,876.80

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Solution

The fourth proportional to 613,780,621.32, 921,252,992.94 and 379,903,876.80 is: 570,216,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,780,621.32 : 921,252,992.94 = 379,903,876.80 : x
  2. Step 2: Convert to fraction form
    613,780,621.32/921,252,992.94 = 379,903,876.80/x
  3. Step 3: Cross multiply
    613,780,621.32x = 921,252,992.94 × 379,903,876.80
  4. Step 4: Simplify right side
    613,780,621.32x = 349,987,583,531,509,056
  5. Step 5: Solve for x
    x = 349,987,583,531,509,056/613,780,621.32
  6. Step 6: Final answer
    x = 570,216,085.97

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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.