Home / 939,646.39-1,296,721.53-509,930.23

Finding the Fourth Proportional to 939,646.39, 1,296,721.53 and 509,930.23

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Solution

The fourth proportional to 939,646.39, 1,296,721.53 and 509,930.23 is: 703,708.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,646.39 : 1,296,721.53 = 509,930.23 : x
  2. Step 2: Convert to fraction form
    939,646.39/1,296,721.53 = 509,930.23/x
  3. Step 3: Cross multiply
    939,646.39x = 1,296,721.53 × 509,930.23
  4. Step 4: Simplify right side
    939,646.39x = 661,237,499,005.59
  5. Step 5: Solve for x
    x = 661,237,499,005.59/939,646.39
  6. Step 6: Final answer
    x = 703,708.87

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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.