Home / 939,857.57-1,296,968.55-510,128.45

Finding the Fourth Proportional to 939,857.57, 1,296,968.55 and 510,128.45

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Solution

The fourth proportional to 939,857.57, 1,296,968.55 and 510,128.45 is: 703,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,857.57 : 1,296,968.55 = 510,128.45 : x
  2. Step 2: Convert to fraction form
    939,857.57/1,296,968.55 = 510,128.45/x
  3. Step 3: Cross multiply
    939,857.57x = 1,296,968.55 × 510,128.45
  4. Step 4: Simplify right side
    939,857.57x = 661,620,556,110.25
  5. Step 5: Solve for x
    x = 661,620,556,110.25/939,857.57
  6. Step 6: Final answer
    x = 703,958.32

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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.