Home / 814,235.70-1,221,353.55-341,454.90

Finding the Fourth Proportional to 814,235.70, 1,221,353.55 and 341,454.90

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Solution

The fourth proportional to 814,235.70, 1,221,353.55 and 341,454.90 is: 512,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,235.70 : 1,221,353.55 = 341,454.90 : x
  2. Step 2: Convert to fraction form
    814,235.70/1,221,353.55 = 341,454.90/x
  3. Step 3: Cross multiply
    814,235.70x = 1,221,353.55 × 341,454.90
  4. Step 4: Simplify right side
    814,235.70x = 417,037,154,279.90
  5. Step 5: Solve for x
    x = 417,037,154,279.90/814,235.70
  6. Step 6: Final answer
    x = 512,182.35

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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.