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Finding the Fourth Proportional to 545,608.10, 818,412.15 and 419,491.10

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Solution

The fourth proportional to 545,608.10, 818,412.15 and 419,491.10 is: 629,236.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,608.10 : 818,412.15 = 419,491.10 : x
  2. Step 2: Convert to fraction form
    545,608.10/818,412.15 = 419,491.10/x
  3. Step 3: Cross multiply
    545,608.10x = 818,412.15 × 419,491.10
  4. Step 4: Simplify right side
    545,608.10x = 343,316,613,056.87
  5. Step 5: Solve for x
    x = 343,316,613,056.87/545,608.10
  6. Step 6: Final answer
    x = 629,236.65

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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.