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Finding the Fourth Proportional to 719,487.44, 992,900.74 and 397,197.76

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Solution

The fourth proportional to 719,487.44, 992,900.74 and 397,197.76 is: 548,137.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,487.44 : 992,900.74 = 397,197.76 : x
  2. Step 2: Convert to fraction form
    719,487.44/992,900.74 = 397,197.76/x
  3. Step 3: Cross multiply
    719,487.44x = 992,900.74 × 397,197.76
  4. Step 4: Simplify right side
    719,487.44x = 394,377,949,830.34
  5. Step 5: Solve for x
    x = 394,377,949,830.34/719,487.44
  6. Step 6: Final answer
    x = 548,137.37

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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.