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Finding the Fourth Proportional to 719,450.54, 992,770.98 and 397,139.84

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Solution

The fourth proportional to 719,450.54, 992,770.98 and 397,139.84 is: 548,013.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,450.54 : 992,770.98 = 397,139.84 : x
  2. Step 2: Convert to fraction form
    719,450.54/992,770.98 = 397,139.84/x
  3. Step 3: Cross multiply
    719,450.54x = 992,770.98 × 397,139.84
  4. Step 4: Simplify right side
    719,450.54x = 394,268,908,153.84
  5. Step 5: Solve for x
    x = 394,268,908,153.84/719,450.54
  6. Step 6: Final answer
    x = 548,013.92

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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.