Home / 613,780,622.32-921,252,994.44-379,903,877.80

Finding the Fourth Proportional to 613,780,622.32, 921,252,994.44 and 379,903,877.80

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Solution

The fourth proportional to 613,780,622.32, 921,252,994.44 and 379,903,877.80 is: 570,216,087.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,780,622.32 : 921,252,994.44 = 379,903,877.80 : x
  2. Step 2: Convert to fraction form
    613,780,622.32/921,252,994.44 = 379,903,877.80/x
  3. Step 3: Cross multiply
    613,780,622.32x = 921,252,994.44 × 379,903,877.80
  4. Step 4: Simplify right side
    613,780,622.32x = 349,987,585,022,617,856
  5. Step 5: Solve for x
    x = 349,987,585,022,617,856/613,780,622.32
  6. Step 6: Final answer
    x = 570,216,087.47

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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.