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Finding the Fourth Proportional to 719,526.96, 992,980.44 and 397,282.80

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Solution

The fourth proportional to 719,526.96, 992,980.44 and 397,282.80 is: 548,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,526.96 : 992,980.44 = 397,282.80 : x
  2. Step 2: Convert to fraction form
    719,526.96/992,980.44 = 397,282.80/x
  3. Step 3: Cross multiply
    719,526.96x = 992,980.44 × 397,282.80
  4. Step 4: Simplify right side
    719,526.96x = 394,494,049,548.43
  5. Step 5: Solve for x
    x = 394,494,049,548.43/719,526.96
  6. Step 6: Final answer
    x = 548,268.61

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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.