Home / 851,556.90-1,275,889.39-513,888.01

Finding the Fourth Proportional to 851,556.90, 1,275,889.39 and 513,888.01

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Solution

The fourth proportional to 851,556.90, 1,275,889.39 and 513,888.01 is: 769,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,556.90 : 1,275,889.39 = 513,888.01 : x
  2. Step 2: Convert to fraction form
    851,556.90/1,275,889.39 = 513,888.01/x
  3. Step 3: Cross multiply
    851,556.90x = 1,275,889.39 × 513,888.01
  4. Step 4: Simplify right side
    851,556.90x = 655,664,259,607.21
  5. Step 5: Solve for x
    x = 655,664,259,607.21/851,556.90
  6. Step 6: Final answer
    x = 769,959.42

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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.