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Finding the Fourth Proportional to 719,388.60, 992,756.46 and 397,098.90

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Solution

The fourth proportional to 719,388.60, 992,756.46 and 397,098.90 is: 547,996.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,388.60 : 992,756.46 = 397,098.90 : x
  2. Step 2: Convert to fraction form
    719,388.60/992,756.46 = 397,098.90/x
  3. Step 3: Cross multiply
    719,388.60x = 992,756.46 × 397,098.90
  4. Step 4: Simplify right side
    719,388.60x = 394,222,498,233.89
  5. Step 5: Solve for x
    x = 394,222,498,233.89/719,388.60
  6. Step 6: Final answer
    x = 547,996.59

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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.