Home / 419,076,305.37-628,711,723.02-142,729,913.72

Finding the Fourth Proportional to 419,076,305.37, 628,711,723.02 and 142,729,913.72

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Solution

The fourth proportional to 419,076,305.37, 628,711,723.02 and 142,729,913.72 is: 214,127,997.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,076,305.37 : 628,711,723.02 = 142,729,913.72 : x
  2. Step 2: Convert to fraction form
    419,076,305.37/628,711,723.02 = 142,729,913.72/x
  3. Step 3: Cross multiply
    419,076,305.37x = 628,711,723.02 × 142,729,913.72
  4. Step 4: Simplify right side
    419,076,305.37x = 89,735,969,978,253,584
  5. Step 5: Solve for x
    x = 89,735,969,978,253,584/419,076,305.37
  6. Step 6: Final answer
    x = 214,127,997.28

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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.