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Finding the Fourth Proportional to 689,940.30, 951,999.07 and 634,131.97

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Solution

The fourth proportional to 689,940.30, 951,999.07 and 634,131.97 is: 874,993.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,940.30 : 951,999.07 = 634,131.97 : x
  2. Step 2: Convert to fraction form
    689,940.30/951,999.07 = 634,131.97/x
  3. Step 3: Cross multiply
    689,940.30x = 951,999.07 × 634,131.97
  4. Step 4: Simplify right side
    689,940.30x = 603,693,045,697.27
  5. Step 5: Solve for x
    x = 603,693,045,697.27/689,940.30
  6. Step 6: Final answer
    x = 874,993.16

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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.