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Finding the Fourth Proportional to 719,475.66, 992,884.47 and 397,185.96

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Solution

The fourth proportional to 719,475.66, 992,884.47 and 397,185.96 is: 548,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,475.66 : 992,884.47 = 397,185.96 : x
  2. Step 2: Convert to fraction form
    719,475.66/992,884.47 = 397,185.96/x
  3. Step 3: Cross multiply
    719,475.66x = 992,884.47 × 397,185.96
  4. Step 4: Simplify right side
    719,475.66x = 394,359,771,386.04
  5. Step 5: Solve for x
    x = 394,359,771,386.04/719,475.66
  6. Step 6: Final answer
    x = 548,121.07

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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.