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Finding the Fourth Proportional to 719,462.23, 992,831.82 and 397,165.39

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Solution

The fourth proportional to 719,462.23, 992,831.82 and 397,165.39 is: 548,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,462.23 : 992,831.82 = 397,165.39 : x
  2. Step 2: Convert to fraction form
    719,462.23/992,831.82 = 397,165.39/x
  3. Step 3: Cross multiply
    719,462.23x = 992,831.82 × 397,165.39
  4. Step 4: Simplify right side
    719,462.23x = 394,318,432,030.55
  5. Step 5: Solve for x
    x = 394,318,432,030.55/719,462.23
  6. Step 6: Final answer
    x = 548,073.85

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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.