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Finding the Fourth Proportional to 719,454.80, 992,821.60 and 397,157.97

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Solution

The fourth proportional to 719,454.80, 992,821.60 and 397,157.97 is: 548,063.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,454.80 : 992,821.60 = 397,157.97 : x
  2. Step 2: Convert to fraction form
    719,454.80/992,821.60 = 397,157.97/x
  3. Step 3: Cross multiply
    719,454.80x = 992,821.60 × 397,157.97
  4. Step 4: Simplify right side
    719,454.80x = 394,307,009,242.36
  5. Step 5: Solve for x
    x = 394,307,009,242.36/719,454.80
  6. Step 6: Final answer
    x = 548,063.63

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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.