Home / 419,372,624.30-628,922,025.81-139,178,273.31

Finding the Fourth Proportional to 419,372,624.30, 628,922,025.81 and 139,178,273.31

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Solution

The fourth proportional to 419,372,624.30, 628,922,025.81 and 139,178,273.31 is: 208,721,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,372,624.30 : 628,922,025.81 = 139,178,273.31 : x
  2. Step 2: Convert to fraction form
    419,372,624.30/628,922,025.81 = 139,178,273.31/x
  3. Step 3: Cross multiply
    419,372,624.30x = 628,922,025.81 × 139,178,273.31
  4. Step 4: Simplify right side
    419,372,624.30x = 87,532,281,598,863,040
  5. Step 5: Solve for x
    x = 87,532,281,598,863,040/419,372,624.30
  6. Step 6: Final answer
    x = 208,721,973.08

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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.