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Finding the Fourth Proportional to 709,548.80, 1,065,100.80 and 443,609.60

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Solution

The fourth proportional to 709,548.80, 1,065,100.80 and 443,609.60 is: 665,900.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,548.80 : 1,065,100.80 = 443,609.60 : x
  2. Step 2: Convert to fraction form
    709,548.80/1,065,100.80 = 443,609.60/x
  3. Step 3: Cross multiply
    709,548.80x = 1,065,100.80 × 443,609.60
  4. Step 4: Simplify right side
    709,548.80x = 472,488,939,847.68
  5. Step 5: Solve for x
    x = 472,488,939,847.68/709,548.80
  6. Step 6: Final answer
    x = 665,900.56

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1.5x scale

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.