Home / 689,015.88-951,107.85-459,490.23

Finding the Fourth Proportional to 689,015.88, 951,107.85 and 459,490.23

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Solution

The fourth proportional to 689,015.88, 951,107.85 and 459,490.23 is: 634,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,015.88 : 951,107.85 = 459,490.23 : x
  2. Step 2: Convert to fraction form
    689,015.88/951,107.85 = 459,490.23/x
  3. Step 3: Cross multiply
    689,015.88x = 951,107.85 × 459,490.23
  4. Step 4: Simplify right side
    689,015.88x = 437,024,764,751.31
  5. Step 5: Solve for x
    x = 437,024,764,751.31/689,015.88
  6. Step 6: Final answer
    x = 634,273.86

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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.