Home / 419,076,305.34-628,711,722.98-142,729,913.69

Finding the Fourth Proportional to 419,076,305.34, 628,711,722.98 and 142,729,913.69

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Solution

The fourth proportional to 419,076,305.34, 628,711,722.98 and 142,729,913.69 is: 214,127,997.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,076,305.34 : 628,711,722.98 = 142,729,913.69 : x
  2. Step 2: Convert to fraction form
    419,076,305.34/628,711,722.98 = 142,729,913.69/x
  3. Step 3: Cross multiply
    419,076,305.34x = 628,711,722.98 × 142,729,913.69
  4. Step 4: Simplify right side
    419,076,305.34x = 89,735,969,959,209,232
  5. Step 5: Solve for x
    x = 89,735,969,959,209,232/419,076,305.34
  6. Step 6: Final answer
    x = 214,127,997.26

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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.