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Finding the Fourth Proportional to 645,108.20, 967,662.30 and 530,946.80

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Solution

The fourth proportional to 645,108.20, 967,662.30 and 530,946.80 is: 796,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,108.20 : 967,662.30 = 530,946.80 : x
  2. Step 2: Convert to fraction form
    645,108.20/967,662.30 = 530,946.80/x
  3. Step 3: Cross multiply
    645,108.20x = 967,662.30 × 530,946.80
  4. Step 4: Simplify right side
    645,108.20x = 513,777,201,665.64
  5. Step 5: Solve for x
    x = 513,777,201,665.64/645,108.20
  6. Step 6: Final answer
    x = 796,420.20

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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.