Home / 939,660.76-1,296,741.36-509,944.60

Finding the Fourth Proportional to 939,660.76, 1,296,741.36 and 509,944.60

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Solution

The fourth proportional to 939,660.76, 1,296,741.36 and 509,944.60 is: 703,728.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,660.76 : 1,296,741.36 = 509,944.60 : x
  2. Step 2: Convert to fraction form
    939,660.76/1,296,741.36 = 509,944.60/x
  3. Step 3: Cross multiply
    939,660.76x = 1,296,741.36 × 509,944.60
  4. Step 4: Simplify right side
    939,660.76x = 661,266,254,128.66
  5. Step 5: Solve for x
    x = 661,266,254,128.66/939,660.76
  6. Step 6: Final answer
    x = 703,728.71

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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.