Home / 916,660.40-1,375,336.20-443,764.40

Finding the Fourth Proportional to 916,660.40, 1,375,336.20 and 443,764.40

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Solution

The fourth proportional to 916,660.40, 1,375,336.20 and 443,764.40 is: 665,813.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,660.40 : 1,375,336.20 = 443,764.40 : x
  2. Step 2: Convert to fraction form
    916,660.40/1,375,336.20 = 443,764.40/x
  3. Step 3: Cross multiply
    916,660.40x = 1,375,336.20 × 443,764.40
  4. Step 4: Simplify right side
    916,660.40x = 610,325,243,591.28
  5. Step 5: Solve for x
    x = 610,325,243,591.28/916,660.40
  6. Step 6: Final answer
    x = 665,813.91

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1.5x scale

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.