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Finding the Fourth Proportional to 719,418.96, 992,798.35 and 397,129.27

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Solution

The fourth proportional to 719,418.96, 992,798.35 and 397,129.27 is: 548,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,418.96 : 992,798.35 = 397,129.27 : x
  2. Step 2: Convert to fraction form
    719,418.96/992,798.35 = 397,129.27/x
  3. Step 3: Cross multiply
    719,418.96x = 992,798.35 × 397,129.27
  4. Step 4: Simplify right side
    719,418.96x = 394,269,283,992.71
  5. Step 5: Solve for x
    x = 394,269,283,992.71/719,418.96
  6. Step 6: Final answer
    x = 548,038.49

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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.