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Finding the Fourth Proportional to 1,687,996.26, 2,530,769.67 and 788,935.14

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Solution

The fourth proportional to 1,687,996.26, 2,530,769.67 and 788,935.14 is: 1,182,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,996.26 : 2,530,769.67 = 788,935.14 : x
  2. Step 2: Convert to fraction form
    1,687,996.26/2,530,769.67 = 788,935.14/x
  3. Step 3: Cross multiply
    1,687,996.26x = 2,530,769.67 × 788,935.14
  4. Step 4: Simplify right side
    1,687,996.26x = 1,996,613,123,909.20
  5. Step 5: Solve for x
    x = 1,996,613,123,909.20/1,687,996.26
  6. Step 6: Final answer
    x = 1,182,830.30

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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.