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Finding the Fourth Proportional to 646,885,644.80, 970,328,467.20 and 629,879,532.80

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Solution

The fourth proportional to 646,885,644.80, 970,328,467.20 and 629,879,532.80 is: 944,819,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,885,644.80 : 970,328,467.20 = 629,879,532.80 : x
  2. Step 2: Convert to fraction form
    646,885,644.80/970,328,467.20 = 629,879,532.80/x
  3. Step 3: Cross multiply
    646,885,644.80x = 970,328,467.20 × 629,879,532.80
  4. Step 4: Simplify right side
    646,885,644.80x = 611,190,041,582,476,160
  5. Step 5: Solve for x
    x = 611,190,041,582,476,160/646,885,644.80
  6. Step 6: Final answer
    x = 944,819,299.20

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Double scale
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Similar ratio
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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.