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Finding the Fourth Proportional to 719,192.44, 992,509.41 and 392,523.31

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Solution

The fourth proportional to 719,192.44, 992,509.41 and 392,523.31 is: 541,695.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,192.44 : 992,509.41 = 392,523.31 : x
  2. Step 2: Convert to fraction form
    719,192.44/992,509.41 = 392,523.31/x
  3. Step 3: Cross multiply
    719,192.44x = 992,509.41 × 392,523.31
  4. Step 4: Simplify right side
    719,192.44x = 389,583,078,819.35
  5. Step 5: Solve for x
    x = 389,583,078,819.35/719,192.44
  6. Step 6: Final answer
    x = 541,695.18

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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.