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Finding the Fourth Proportional to 522,072.30, 783,108.45 and 321,743.10

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Solution

The fourth proportional to 522,072.30, 783,108.45 and 321,743.10 is: 482,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,072.30 : 783,108.45 = 321,743.10 : x
  2. Step 2: Convert to fraction form
    522,072.30/783,108.45 = 321,743.10/x
  3. Step 3: Cross multiply
    522,072.30x = 783,108.45 × 321,743.10
  4. Step 4: Simplify right side
    522,072.30x = 251,959,740,339.20
  5. Step 5: Solve for x
    x = 251,959,740,339.20/522,072.30
  6. Step 6: Final answer
    x = 482,614.65

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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.