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Finding the Fourth Proportional to 1,294,849.59, 1,788,020.73 and 812,244.30

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Solution

The fourth proportional to 1,294,849.59, 1,788,020.73 and 812,244.30 is: 1,121,604.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,849.59 : 1,788,020.73 = 812,244.30 : x
  2. Step 2: Convert to fraction form
    1,294,849.59/1,788,020.73 = 812,244.30/x
  3. Step 3: Cross multiply
    1,294,849.59x = 1,788,020.73 × 812,244.30
  4. Step 4: Simplify right side
    1,294,849.59x = 1,452,309,646,224.34
  5. Step 5: Solve for x
    x = 1,452,309,646,224.34/1,294,849.59
  6. Step 6: Final answer
    x = 1,121,604.90

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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.