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Finding the Fourth Proportional to 719,495.49, 992,877.69 and 397,198.67

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Solution

The fourth proportional to 719,495.49, 992,877.69 and 397,198.67 is: 548,119.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,495.49 : 992,877.69 = 397,198.67 : x
  2. Step 2: Convert to fraction form
    719,495.49/992,877.69 = 397,198.67/x
  3. Step 3: Cross multiply
    719,495.49x = 992,877.69 × 397,198.67
  4. Step 4: Simplify right side
    719,495.49x = 394,369,692,976.28
  5. Step 5: Solve for x
    x = 394,369,692,976.28/719,495.49
  6. Step 6: Final answer
    x = 548,119.76

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1.5x scale

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.