Home / 479,190.20-661,495.02-309,507.08

Finding the Fourth Proportional to 479,190.20, 661,495.02 and 309,507.08

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Solution

The fourth proportional to 479,190.20, 661,495.02 and 309,507.08 is: 427,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,190.20 : 661,495.02 = 309,507.08 : x
  2. Step 2: Convert to fraction form
    479,190.20/661,495.02 = 309,507.08/x
  3. Step 3: Cross multiply
    479,190.20x = 661,495.02 × 309,507.08
  4. Step 4: Simplify right side
    479,190.20x = 204,737,392,074.74
  5. Step 5: Solve for x
    x = 204,737,392,074.74/479,190.20
  6. Step 6: Final answer
    x = 427,257.05

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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.