Home / 660,537.05-911,525.64-388,622.43

Finding the Fourth Proportional to 660,537.05, 911,525.64 and 388,622.43

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Solution

The fourth proportional to 660,537.05, 911,525.64 and 388,622.43 is: 536,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,537.05 : 911,525.64 = 388,622.43 : x
  2. Step 2: Convert to fraction form
    660,537.05/911,525.64 = 388,622.43/x
  3. Step 3: Cross multiply
    660,537.05x = 911,525.64 × 388,622.43
  4. Step 4: Simplify right side
    660,537.05x = 354,239,309,224.11
  5. Step 5: Solve for x
    x = 354,239,309,224.11/660,537.05
  6. Step 6: Final answer
    x = 536,289.84

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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.