Home / 805,768.16-1,111,960.64-443,219.61

Finding the Fourth Proportional to 805,768.16, 1,111,960.64 and 443,219.61

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Solution

The fourth proportional to 805,768.16, 1,111,960.64 and 443,219.61 is: 611,643.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,768.16 : 1,111,960.64 = 443,219.61 : x
  2. Step 2: Convert to fraction form
    805,768.16/1,111,960.64 = 443,219.61/x
  3. Step 3: Cross multiply
    805,768.16x = 1,111,960.64 × 443,219.61
  4. Step 4: Simplify right side
    805,768.16x = 492,842,766,474.05
  5. Step 5: Solve for x
    x = 492,842,766,474.05/805,768.16
  6. Step 6: Final answer
    x = 611,643.39

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1.5x scale

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.