Home / 419,076,306.87-628,711,725.27-142,729,915.22

Finding the Fourth Proportional to 419,076,306.87, 628,711,725.27 and 142,729,915.22

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Solution

The fourth proportional to 419,076,306.87, 628,711,725.27 and 142,729,915.22 is: 214,127,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,076,306.87 : 628,711,725.27 = 142,729,915.22 : x
  2. Step 2: Convert to fraction form
    419,076,306.87/628,711,725.27 = 142,729,915.22/x
  3. Step 3: Cross multiply
    419,076,306.87x = 628,711,725.27 × 142,729,915.22
  4. Step 4: Simplify right side
    419,076,306.87x = 89,735,971,242,463,472
  5. Step 5: Solve for x
    x = 89,735,971,242,463,472/419,076,306.87
  6. Step 6: Final answer
    x = 214,127,999.53

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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.