Home / 689,940.80-951,999.77-634,132.47

Finding the Fourth Proportional to 689,940.80, 951,999.77 and 634,132.47

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Solution

The fourth proportional to 689,940.80, 951,999.77 and 634,132.47 is: 874,993.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,940.80 : 951,999.77 = 634,132.47 : x
  2. Step 2: Convert to fraction form
    689,940.80/951,999.77 = 634,132.47/x
  3. Step 3: Cross multiply
    689,940.80x = 951,999.77 × 634,132.47
  4. Step 4: Simplify right side
    689,940.80x = 603,693,962,418.87
  5. Step 5: Solve for x
    x = 603,693,962,418.87/689,940.80
  6. Step 6: Final answer
    x = 874,993.86

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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.