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Finding the Fourth Proportional to 1,332,580.63, 1,839,005.14 and 728,968.63

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Solution

The fourth proportional to 1,332,580.63, 1,839,005.14 and 728,968.63 is: 1,006,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,580.63 : 1,839,005.14 = 728,968.63 : x
  2. Step 2: Convert to fraction form
    1,332,580.63/1,839,005.14 = 728,968.63/x
  3. Step 3: Cross multiply
    1,332,580.63x = 1,839,005.14 × 728,968.63
  4. Step 4: Simplify right side
    1,332,580.63x = 1,340,577,048,273.73
  5. Step 5: Solve for x
    x = 1,340,577,048,273.73/1,332,580.63
  6. Step 6: Final answer
    x = 1,006,000.71

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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.