Home / 856,661.10-1,284,991.65-225,638.70

Finding the Fourth Proportional to 856,661.10, 1,284,991.65 and 225,638.70

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Solution

The fourth proportional to 856,661.10, 1,284,991.65 and 225,638.70 is: 338,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,661.10 : 1,284,991.65 = 225,638.70 : x
  2. Step 2: Convert to fraction form
    856,661.10/1,284,991.65 = 225,638.70/x
  3. Step 3: Cross multiply
    856,661.10x = 1,284,991.65 × 225,638.70
  4. Step 4: Simplify right side
    856,661.10x = 289,943,845,416.86
  5. Step 5: Solve for x
    x = 289,943,845,416.86/856,661.10
  6. Step 6: Final answer
    x = 338,458.05

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Double scale
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Similar ratio
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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.