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Finding the Fourth Proportional to 521,704.10, 783,074.55 and 255,764.90

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Solution

The fourth proportional to 521,704.10, 783,074.55 and 255,764.90 is: 383,901.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,704.10 : 783,074.55 = 255,764.90 : x
  2. Step 2: Convert to fraction form
    521,704.10/783,074.55 = 255,764.90/x
  3. Step 3: Cross multiply
    521,704.10x = 783,074.55 × 255,764.90
  4. Step 4: Simplify right side
    521,704.10x = 200,282,983,973.30
  5. Step 5: Solve for x
    x = 200,282,983,973.30/521,704.10
  6. Step 6: Final answer
    x = 383,901.50

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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.