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Finding the Fourth Proportional to 719,335.86, 992,683.55 and 397,046.04

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Solution

The fourth proportional to 719,335.86, 992,683.55 and 397,046.04 is: 547,923.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,335.86 : 992,683.55 = 397,046.04 : x
  2. Step 2: Convert to fraction form
    719,335.86/992,683.55 = 397,046.04/x
  3. Step 3: Cross multiply
    719,335.86x = 992,683.55 × 397,046.04
  4. Step 4: Simplify right side
    719,335.86x = 394,141,069,770.69
  5. Step 5: Solve for x
    x = 394,141,069,770.69/719,335.86
  6. Step 6: Final answer
    x = 547,923.57

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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.