Home / 939,646.64-1,296,721.87-509,930.48

Finding the Fourth Proportional to 939,646.64, 1,296,721.87 and 509,930.48

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Solution

The fourth proportional to 939,646.64, 1,296,721.87 and 509,930.48 is: 703,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,646.64 : 1,296,721.87 = 509,930.48 : x
  2. Step 2: Convert to fraction form
    939,646.64/1,296,721.87 = 509,930.48/x
  3. Step 3: Cross multiply
    939,646.64x = 1,296,721.87 × 509,930.48
  4. Step 4: Simplify right side
    939,646.64x = 661,237,997,837.16
  5. Step 5: Solve for x
    x = 661,237,997,837.16/939,646.64
  6. Step 6: Final answer
    x = 703,709.22

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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.