Home / 689,679.55-1,033,848.38-329,756.86

Finding the Fourth Proportional to 689,679.55, 1,033,848.38 and 329,756.86

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Solution

The fourth proportional to 689,679.55, 1,033,848.38 and 329,756.86 is: 494,314.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,679.55 : 1,033,848.38 = 329,756.86 : x
  2. Step 2: Convert to fraction form
    689,679.55/1,033,848.38 = 329,756.86/x
  3. Step 3: Cross multiply
    689,679.55x = 1,033,848.38 × 329,756.86
  4. Step 4: Simplify right side
    689,679.55x = 340,918,595,504.89
  5. Step 5: Solve for x
    x = 340,918,595,504.89/689,679.55
  6. Step 6: Final answer
    x = 494,314.49

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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.