Home / 545,821.60-818,732.40-309,625.60

Finding the Fourth Proportional to 545,821.60, 818,732.40 and 309,625.60

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Solution

The fourth proportional to 545,821.60, 818,732.40 and 309,625.60 is: 464,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,821.60 : 818,732.40 = 309,625.60 : x
  2. Step 2: Convert to fraction form
    545,821.60/818,732.40 = 309,625.60/x
  3. Step 3: Cross multiply
    545,821.60x = 818,732.40 × 309,625.60
  4. Step 4: Simplify right side
    545,821.60x = 253,500,510,589.44
  5. Step 5: Solve for x
    x = 253,500,510,589.44/545,821.60
  6. Step 6: Final answer
    x = 464,438.40

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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.