Home / 432,979.60-649,469.40-328,003.60

Finding the Fourth Proportional to 432,979.60, 649,469.40 and 328,003.60

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Solution

The fourth proportional to 432,979.60, 649,469.40 and 328,003.60 is: 492,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,979.60 : 649,469.40 = 328,003.60 : x
  2. Step 2: Convert to fraction form
    432,979.60/649,469.40 = 328,003.60/x
  3. Step 3: Cross multiply
    432,979.60x = 649,469.40 × 328,003.60
  4. Step 4: Simplify right side
    432,979.60x = 213,028,301,289.84
  5. Step 5: Solve for x
    x = 213,028,301,289.84/432,979.60
  6. Step 6: Final answer
    x = 492,005.40

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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.