Home / 812,890.08-1,121,057.28-526,111.20

Finding the Fourth Proportional to 812,890.08, 1,121,057.28 and 526,111.20

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Solution

The fourth proportional to 812,890.08, 1,121,057.28 and 526,111.20 is: 725,560.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,890.08 : 1,121,057.28 = 526,111.20 : x
  2. Step 2: Convert to fraction form
    812,890.08/1,121,057.28 = 526,111.20/x
  3. Step 3: Cross multiply
    812,890.08x = 1,121,057.28 × 526,111.20
  4. Step 4: Simplify right side
    812,890.08x = 589,800,790,849.54
  5. Step 5: Solve for x
    x = 589,800,790,849.54/812,890.08
  6. Step 6: Final answer
    x = 725,560.33

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.