Home / 939,661.76-1,296,742.74-509,945.60

Finding the Fourth Proportional to 939,661.76, 1,296,742.74 and 509,945.60

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Solution

The fourth proportional to 939,661.76, 1,296,742.74 and 509,945.60 is: 703,730.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,661.76 : 1,296,742.74 = 509,945.60 : x
  2. Step 2: Convert to fraction form
    939,661.76/1,296,742.74 = 509,945.60/x
  3. Step 3: Cross multiply
    939,661.76x = 1,296,742.74 × 509,945.60
  4. Step 4: Simplify right side
    939,661.76x = 661,268,254,594.94
  5. Step 5: Solve for x
    x = 661,268,254,594.94/939,661.76
  6. Step 6: Final answer
    x = 703,730.09

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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.