Home / 805,209.27-1,111,213.67-442,660.83

Finding the Fourth Proportional to 805,209.27, 1,111,213.67 and 442,660.83

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Solution

The fourth proportional to 805,209.27, 1,111,213.67 and 442,660.83 is: 610,885.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,209.27 : 1,111,213.67 = 442,660.83 : x
  2. Step 2: Convert to fraction form
    805,209.27/1,111,213.67 = 442,660.83/x
  3. Step 3: Cross multiply
    805,209.27x = 1,111,213.67 × 442,660.83
  4. Step 4: Simplify right side
    805,209.27x = 491,890,763,256.24
  5. Step 5: Solve for x
    x = 491,890,763,256.24/805,209.27
  6. Step 6: Final answer
    x = 610,885.62

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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.