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Finding the Fourth Proportional to 606,720.80, 910,081.20 and 308,122.40

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Solution

The fourth proportional to 606,720.80, 910,081.20 and 308,122.40 is: 462,183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,720.80 : 910,081.20 = 308,122.40 : x
  2. Step 2: Convert to fraction form
    606,720.80/910,081.20 = 308,122.40/x
  3. Step 3: Cross multiply
    606,720.80x = 910,081.20 × 308,122.40
  4. Step 4: Simplify right side
    606,720.80x = 280,416,403,538.88
  5. Step 5: Solve for x
    x = 280,416,403,538.88/606,720.80
  6. Step 6: Final answer
    x = 462,183.60

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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.