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Finding the Fourth Proportional to 1,394,394, 1,924,263.75 and 790,782

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Solution

The fourth proportional to 1,394,394, 1,924,263.75 and 790,782 is: 1,091,279.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394,394 : 1,924,263.75 = 790,782 : x
  2. Step 2: Convert to fraction form
    1,394,394/1,924,263.75 = 790,782/x
  3. Step 3: Cross multiply
    1,394,394x = 1,924,263.75 × 790,782
  4. Step 4: Simplify right side
    1,394,394x = 1,521,673,136,752.50
  5. Step 5: Solve for x
    x = 1,521,673,136,752.50/1,394,394
  6. Step 6: Final answer
    x = 1,091,279.18

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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.