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Finding the Fourth Proportional to 911,670.40, 1,369,838.40 and 809,027.20

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Solution

The fourth proportional to 911,670.40, 1,369,838.40 and 809,027.20 is: 1,215,610.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,670.40 : 1,369,838.40 = 809,027.20 : x
  2. Step 2: Convert to fraction form
    911,670.40/1,369,838.40 = 809,027.20/x
  3. Step 3: Cross multiply
    911,670.40x = 1,369,838.40 × 809,027.20
  4. Step 4: Simplify right side
    911,670.40x = 1,108,236,525,204.48
  5. Step 5: Solve for x
    x = 1,108,236,525,204.48/911,670.40
  6. Step 6: Final answer
    x = 1,215,610.95

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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.