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Finding the Fourth Proportional to 719,442.05, 992,832.48 and 397,151.42

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Solution

The fourth proportional to 719,442.05, 992,832.48 and 397,151.42 is: 548,070.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,442.05 : 992,832.48 = 397,151.42 : x
  2. Step 2: Convert to fraction form
    719,442.05/992,832.48 = 397,151.42/x
  3. Step 3: Cross multiply
    719,442.05x = 992,832.48 × 397,151.42
  4. Step 4: Simplify right side
    719,442.05x = 394,304,824,289.96
  5. Step 5: Solve for x
    x = 394,304,824,289.96/719,442.05
  6. Step 6: Final answer
    x = 548,070.31

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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.