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Finding the Fourth Proportional to 911,666.40, 1,369,832.40 and 809,023.20

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Solution

The fourth proportional to 911,666.40, 1,369,832.40 and 809,023.20 is: 1,215,604.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,666.40 : 1,369,832.40 = 809,023.20 : x
  2. Step 2: Convert to fraction form
    911,666.40/1,369,832.40 = 809,023.20/x
  3. Step 3: Cross multiply
    911,666.40x = 1,369,832.40 × 809,023.20
  4. Step 4: Simplify right side
    911,666.40x = 1,108,226,191,711.68
  5. Step 5: Solve for x
    x = 1,108,226,191,711.68/911,666.40
  6. Step 6: Final answer
    x = 1,215,604.95

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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.