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Finding the Fourth Proportional to 549,978.44, 757,550.48 and 388,553.16

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Solution

The fourth proportional to 549,978.44, 757,550.48 and 388,553.16 is: 535,200.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,978.44 : 757,550.48 = 388,553.16 : x
  2. Step 2: Convert to fraction form
    549,978.44/757,550.48 = 388,553.16/x
  3. Step 3: Cross multiply
    549,978.44x = 757,550.48 × 388,553.16
  4. Step 4: Simplify right side
    549,978.44x = 294,348,632,863.52
  5. Step 5: Solve for x
    x = 294,348,632,863.52/549,978.44
  6. Step 6: Final answer
    x = 535,200.31

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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.