Home / 716,238.74-988,409.97-393,973.36

Finding the Fourth Proportional to 716,238.74, 988,409.97 and 393,973.36

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Solution

The fourth proportional to 716,238.74, 988,409.97 and 393,973.36 is: 543,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,238.74 : 988,409.97 = 393,973.36 : x
  2. Step 2: Convert to fraction form
    716,238.74/988,409.97 = 393,973.36/x
  3. Step 3: Cross multiply
    716,238.74x = 988,409.97 × 393,973.36
  4. Step 4: Simplify right side
    716,238.74x = 389,407,194,467.37
  5. Step 5: Solve for x
    x = 389,407,194,467.37/716,238.74
  6. Step 6: Final answer
    x = 543,683.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.