Home / 1,236,910.40-1,855,171.20-438,077.60

Finding the Fourth Proportional to 1,236,910.40, 1,855,171.20 and 438,077.60

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Solution

The fourth proportional to 1,236,910.40, 1,855,171.20 and 438,077.60 is: 657,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,910.40 : 1,855,171.20 = 438,077.60 : x
  2. Step 2: Convert to fraction form
    1,236,910.40/1,855,171.20 = 438,077.60/x
  3. Step 3: Cross multiply
    1,236,910.40x = 1,855,171.20 × 438,077.60
  4. Step 4: Simplify right side
    1,236,910.40x = 812,708,946,885.12
  5. Step 5: Solve for x
    x = 812,708,946,885.12/1,236,910.40
  6. Step 6: Final answer
    x = 657,047.55

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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.