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Finding the Fourth Proportional to 539,670.80, 809,506.20 and 382,077.20

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Solution

The fourth proportional to 539,670.80, 809,506.20 and 382,077.20 is: 573,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,670.80 : 809,506.20 = 382,077.20 : x
  2. Step 2: Convert to fraction form
    539,670.80/809,506.20 = 382,077.20/x
  3. Step 3: Cross multiply
    539,670.80x = 809,506.20 × 382,077.20
  4. Step 4: Simplify right side
    539,670.80x = 309,293,862,278.64
  5. Step 5: Solve for x
    x = 309,293,862,278.64/539,670.80
  6. Step 6: Final answer
    x = 573,115.80

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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.