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Finding the Fourth Proportional to 522,080.90, 783,121.35 and 342,455.30

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Solution

The fourth proportional to 522,080.90, 783,121.35 and 342,455.30 is: 513,682.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,080.90 : 783,121.35 = 342,455.30 : x
  2. Step 2: Convert to fraction form
    522,080.90/783,121.35 = 342,455.30/x
  3. Step 3: Cross multiply
    522,080.90x = 783,121.35 × 342,455.30
  4. Step 4: Simplify right side
    522,080.90x = 268,184,056,850.66
  5. Step 5: Solve for x
    x = 268,184,056,850.66/522,080.90
  6. Step 6: Final answer
    x = 513,682.95

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Double scale
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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.