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Finding the Fourth Proportional to 480,132.96, 662,375.34 and 289,035.64

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Solution

The fourth proportional to 480,132.96, 662,375.34 and 289,035.64 is: 398,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,132.96 : 662,375.34 = 289,035.64 : x
  2. Step 2: Convert to fraction form
    480,132.96/662,375.34 = 289,035.64/x
  3. Step 3: Cross multiply
    480,132.96x = 662,375.34 × 289,035.64
  4. Step 4: Simplify right side
    480,132.96x = 191,450,080,317.12
  5. Step 5: Solve for x
    x = 191,450,080,317.12/480,132.96
  6. Step 6: Final answer
    x = 398,743.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.