Home / 771,404.80-1,157,107.20-328,115.20

Finding the Fourth Proportional to 771,404.80, 1,157,107.20 and 328,115.20

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Solution

The fourth proportional to 771,404.80, 1,157,107.20 and 328,115.20 is: 492,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,404.80 : 1,157,107.20 = 328,115.20 : x
  2. Step 2: Convert to fraction form
    771,404.80/1,157,107.20 = 328,115.20/x
  3. Step 3: Cross multiply
    771,404.80x = 1,157,107.20 × 328,115.20
  4. Step 4: Simplify right side
    771,404.80x = 379,664,460,349.44
  5. Step 5: Solve for x
    x = 379,664,460,349.44/771,404.80
  6. Step 6: Final answer
    x = 492,172.80

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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.