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Finding the Fourth Proportional to 719,466.82, 992,858.12 and 397,170

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Solution

The fourth proportional to 719,466.82, 992,858.12 and 397,170 is: 548,091.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,466.82 : 992,858.12 = 397,170 : x
  2. Step 2: Convert to fraction form
    719,466.82/992,858.12 = 397,170/x
  3. Step 3: Cross multiply
    719,466.82x = 992,858.12 × 397,170
  4. Step 4: Simplify right side
    719,466.82x = 394,333,461,258.02
  5. Step 5: Solve for x
    x = 394,333,461,258.02/719,466.82
  6. Step 6: Final answer
    x = 548,091.24

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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.