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Finding the Fourth Proportional to 647,884.80, 971,827.20 and 481,996.80

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Solution

The fourth proportional to 647,884.80, 971,827.20 and 481,996.80 is: 722,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,884.80 : 971,827.20 = 481,996.80 : x
  2. Step 2: Convert to fraction form
    647,884.80/971,827.20 = 481,996.80/x
  3. Step 3: Cross multiply
    647,884.80x = 971,827.20 × 481,996.80
  4. Step 4: Simplify right side
    647,884.80x = 468,417,600,552.96
  5. Step 5: Solve for x
    x = 468,417,600,552.96/647,884.80
  6. Step 6: Final answer
    x = 722,995.20

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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.