Home / 723,126.89-997,893.50-396,428.73

Finding the Fourth Proportional to 723,126.89, 997,893.50 and 396,428.73

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Solution

The fourth proportional to 723,126.89, 997,893.50 and 396,428.73 is: 547,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,126.89 : 997,893.50 = 396,428.73 : x
  2. Step 2: Convert to fraction form
    723,126.89/997,893.50 = 396,428.73/x
  3. Step 3: Cross multiply
    723,126.89x = 997,893.50 × 396,428.73
  4. Step 4: Simplify right side
    723,126.89x = 395,593,645,908.64
  5. Step 5: Solve for x
    x = 395,593,645,908.64/723,126.89
  6. Step 6: Final answer
    x = 547,059.80

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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.