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Finding the Fourth Proportional to 483,114.52, 721,418.47 and 394,543.72

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Solution

The fourth proportional to 483,114.52, 721,418.47 and 394,543.72 is: 589,158.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,114.52 : 721,418.47 = 394,543.72 : x
  2. Step 2: Convert to fraction form
    483,114.52/721,418.47 = 394,543.72/x
  3. Step 3: Cross multiply
    483,114.52x = 721,418.47 × 394,543.72
  4. Step 4: Simplify right side
    483,114.52x = 284,631,126,830.51
  5. Step 5: Solve for x
    x = 284,631,126,830.51/483,114.52
  6. Step 6: Final answer
    x = 589,158.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.