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Finding the Fourth Proportional to 719,497.39, 992,880.39 and 397,200.58

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Solution

The fourth proportional to 719,497.39, 992,880.39 and 397,200.58 is: 548,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,497.39 : 992,880.39 = 397,200.58 : x
  2. Step 2: Convert to fraction form
    719,497.39/992,880.39 = 397,200.58/x
  3. Step 3: Cross multiply
    719,497.39x = 992,880.39 × 397,200.58
  4. Step 4: Simplify right side
    719,497.39x = 394,372,666,778.63
  5. Step 5: Solve for x
    x = 394,372,666,778.63/719,497.39
  6. Step 6: Final answer
    x = 548,122.44

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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.