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Finding the Fourth Proportional to 451,955.52, 623,866.32 and 388,036.80

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Solution

The fourth proportional to 451,955.52, 623,866.32 and 388,036.80 is: 535,634.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,955.52 : 623,866.32 = 388,036.80 : x
  2. Step 2: Convert to fraction form
    451,955.52/623,866.32 = 388,036.80/x
  3. Step 3: Cross multiply
    451,955.52x = 623,866.32 × 388,036.80
  4. Step 4: Simplify right side
    451,955.52x = 242,083,090,440.58
  5. Step 5: Solve for x
    x = 242,083,090,440.58/451,955.52
  6. Step 6: Final answer
    x = 535,634.77

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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.