Home / 405,215,683.96-607,674,631.62-139,245,969.56

Finding the Fourth Proportional to 405,215,683.96, 607,674,631.62 and 139,245,969.56

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Solution

The fourth proportional to 405,215,683.96, 607,674,631.62 and 139,245,969.56 is: 208,817,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,215,683.96 : 607,674,631.62 = 139,245,969.56 : x
  2. Step 2: Convert to fraction form
    405,215,683.96/607,674,631.62 = 139,245,969.56/x
  3. Step 3: Cross multiply
    405,215,683.96x = 607,674,631.62 × 139,245,969.56
  4. Step 4: Simplify right side
    405,215,683.96x = 84,616,243,256,942,736
  5. Step 5: Solve for x
    x = 84,616,243,256,942,736/405,215,683.96
  6. Step 6: Final answer
    x = 208,817,789.16

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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.