Home / 819,789.34-1,131,311.30-457,236.69

Finding the Fourth Proportional to 819,789.34, 1,131,311.30 and 457,236.69

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Solution

The fourth proportional to 819,789.34, 1,131,311.30 and 457,236.69 is: 630,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,789.34 : 1,131,311.30 = 457,236.69 : x
  2. Step 2: Convert to fraction form
    819,789.34/1,131,311.30 = 457,236.69/x
  3. Step 3: Cross multiply
    819,789.34x = 1,131,311.30 × 457,236.69
  4. Step 4: Simplify right side
    819,789.34x = 517,277,034,171.60
  5. Step 5: Solve for x
    x = 517,277,034,171.60/819,789.34
  6. Step 6: Final answer
    x = 630,987.75

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Half scale
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Double scale
Find fourth proportional to 819,790.34, 1,131,312.68 and 457,237.69
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.