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Finding the Fourth Proportional to 719,357.42, 992,713.30 and 397,067.60

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Solution

The fourth proportional to 719,357.42, 992,713.30 and 397,067.60 is: 547,953.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,357.42 : 992,713.30 = 397,067.60 : x
  2. Step 2: Convert to fraction form
    719,357.42/992,713.30 = 397,067.60/x
  3. Step 3: Cross multiply
    719,357.42x = 992,713.30 × 397,067.60
  4. Step 4: Simplify right side
    719,357.42x = 394,174,289,008.19
  5. Step 5: Solve for x
    x = 394,174,289,008.19/719,357.42
  6. Step 6: Final answer
    x = 547,953.32

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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.