Home / 432,003.20-648,004.80-290,998.40

Finding the Fourth Proportional to 432,003.20, 648,004.80 and 290,998.40

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Solution

The fourth proportional to 432,003.20, 648,004.80 and 290,998.40 is: 436,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,003.20 : 648,004.80 = 290,998.40 : x
  2. Step 2: Convert to fraction form
    432,003.20/648,004.80 = 290,998.40/x
  3. Step 3: Cross multiply
    432,003.20x = 648,004.80 × 290,998.40
  4. Step 4: Simplify right side
    432,003.20x = 188,568,359,992.32
  5. Step 5: Solve for x
    x = 188,568,359,992.32/432,003.20
  6. Step 6: Final answer
    x = 436,497.60

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Similar ratio
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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.