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Finding the Fourth Proportional to 1,294,975.20, 1,942,462.80 and 996,031.20

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Solution

The fourth proportional to 1,294,975.20, 1,942,462.80 and 996,031.20 is: 1,494,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,975.20 : 1,942,462.80 = 996,031.20 : x
  2. Step 2: Convert to fraction form
    1,294,975.20/1,942,462.80 = 996,031.20/x
  3. Step 3: Cross multiply
    1,294,975.20x = 1,942,462.80 × 996,031.20
  4. Step 4: Simplify right side
    1,294,975.20x = 1,934,753,553,639.36
  5. Step 5: Solve for x
    x = 1,934,753,553,639.36/1,294,975.20
  6. Step 6: Final answer
    x = 1,494,046.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.