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Finding the Fourth Proportional to 719,162.42, 992,467.96 and 392,493.26

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Solution

The fourth proportional to 719,162.42, 992,467.96 and 392,493.26 is: 541,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,162.42 : 992,467.96 = 392,493.26 : x
  2. Step 2: Convert to fraction form
    719,162.42/992,467.96 = 392,493.26/x
  3. Step 3: Cross multiply
    719,162.42x = 992,467.96 × 392,493.26
  4. Step 4: Simplify right side
    719,162.42x = 389,536,986,565.89
  5. Step 5: Solve for x
    x = 389,536,986,565.89/719,162.42
  6. Step 6: Final answer
    x = 541,653.70

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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.