Home / 419,906,010.40-629,859,015.60-288,392,077.60

Finding the Fourth Proportional to 419,906,010.40, 629,859,015.60 and 288,392,077.60

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Solution

The fourth proportional to 419,906,010.40, 629,859,015.60 and 288,392,077.60 is: 432,588,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,906,010.40 : 629,859,015.60 = 288,392,077.60 : x
  2. Step 2: Convert to fraction form
    419,906,010.40/629,859,015.60 = 288,392,077.60/x
  3. Step 3: Cross multiply
    419,906,010.40x = 629,859,015.60 × 288,392,077.60
  4. Step 4: Simplify right side
    419,906,010.40x = 181,646,350,103,974,848
  5. Step 5: Solve for x
    x = 181,646,350,103,974,848/419,906,010.40
  6. Step 6: Final answer
    x = 432,588,116.40

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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.