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Finding the Fourth Proportional to 1,394,393, 1,924,262.37 and 790,781

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Solution

The fourth proportional to 1,394,393, 1,924,262.37 and 790,781 is: 1,091,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394,393 : 1,924,262.37 = 790,781 : x
  2. Step 2: Convert to fraction form
    1,394,393/1,924,262.37 = 790,781/x
  3. Step 3: Cross multiply
    1,394,393x = 1,924,262.37 × 790,781
  4. Step 4: Simplify right side
    1,394,393x = 1,521,670,121,210.97
  5. Step 5: Solve for x
    x = 1,521,670,121,210.97/1,394,393
  6. Step 6: Final answer
    x = 1,091,277.80

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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.