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Finding the Fourth Proportional to 779,907.80, 1,170,031.80 and 443,109.80

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Solution

The fourth proportional to 779,907.80, 1,170,031.80 and 443,109.80 is: 664,761.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,907.80 : 1,170,031.80 = 443,109.80 : x
  2. Step 2: Convert to fraction form
    779,907.80/1,170,031.80 = 443,109.80/x
  3. Step 3: Cross multiply
    779,907.80x = 1,170,031.80 × 443,109.80
  4. Step 4: Simplify right side
    779,907.80x = 518,452,556,891.64
  5. Step 5: Solve for x
    x = 518,452,556,891.64/779,907.80
  6. Step 6: Final answer
    x = 664,761.34

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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.