Home / 814,164.70-1,123,520.70-491,818.66

Finding the Fourth Proportional to 814,164.70, 1,123,520.70 and 491,818.66

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Solution

The fourth proportional to 814,164.70, 1,123,520.70 and 491,818.66 is: 678,693.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,164.70 : 1,123,520.70 = 491,818.66 : x
  2. Step 2: Convert to fraction form
    814,164.70/1,123,520.70 = 491,818.66/x
  3. Step 3: Cross multiply
    814,164.70x = 1,123,520.70 × 491,818.66
  4. Step 4: Simplify right side
    814,164.70x = 552,568,445,156.26
  5. Step 5: Solve for x
    x = 552,568,445,156.26/814,164.70
  6. Step 6: Final answer
    x = 678,693.69

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Double scale
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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.