Home / 689,939.30-951,997.70-634,130.97

Finding the Fourth Proportional to 689,939.30, 951,997.70 and 634,130.97

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Solution

The fourth proportional to 689,939.30, 951,997.70 and 634,130.97 is: 874,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,939.30 : 951,997.70 = 634,130.97 : x
  2. Step 2: Convert to fraction form
    689,939.30/951,997.70 = 634,130.97/x
  3. Step 3: Cross multiply
    689,939.30x = 951,997.70 × 634,130.97
  4. Step 4: Simplify right side
    689,939.30x = 603,691,221,768.11
  5. Step 5: Solve for x
    x = 603,691,221,768.11/689,939.30
  6. Step 6: Final answer
    x = 874,991.79

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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.