Home / 780,940.80-1,170,536.40-331,585.20

Finding the Fourth Proportional to 780,940.80, 1,170,536.40 and 331,585.20

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Solution

The fourth proportional to 780,940.80, 1,170,536.40 and 331,585.20 is: 497,006.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,940.80 : 1,170,536.40 = 331,585.20 : x
  2. Step 2: Convert to fraction form
    780,940.80/1,170,536.40 = 331,585.20/x
  3. Step 3: Cross multiply
    780,940.80x = 1,170,536.40 × 331,585.20
  4. Step 4: Simplify right side
    780,940.80x = 388,132,546,301.28
  5. Step 5: Solve for x
    x = 388,132,546,301.28/780,940.80
  6. Step 6: Final answer
    x = 497,006.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.