Home / 419,281,491.20-628,922,236.80-128,148,051.20

Finding the Fourth Proportional to 419,281,491.20, 628,922,236.80 and 128,148,051.20

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Solution

The fourth proportional to 419,281,491.20, 628,922,236.80 and 128,148,051.20 is: 192,222,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,281,491.20 : 628,922,236.80 = 128,148,051.20 : x
  2. Step 2: Convert to fraction form
    419,281,491.20/628,922,236.80 = 128,148,051.20/x
  3. Step 3: Cross multiply
    419,281,491.20x = 628,922,236.80 × 128,148,051.20
  4. Step 4: Simplify right side
    419,281,491.20x = 80,595,159,002,264,912
  5. Step 5: Solve for x
    x = 80,595,159,002,264,912/419,281,491.20
  6. Step 6: Final answer
    x = 192,222,076.80

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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.