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Finding the Fourth Proportional to 547,272.30, 820,908.45 and 494,128.20

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Solution

The fourth proportional to 547,272.30, 820,908.45 and 494,128.20 is: 741,192.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,272.30 : 820,908.45 = 494,128.20 : x
  2. Step 2: Convert to fraction form
    547,272.30/820,908.45 = 494,128.20/x
  3. Step 3: Cross multiply
    547,272.30x = 820,908.45 × 494,128.20
  4. Step 4: Simplify right side
    547,272.30x = 405,634,014,763.29
  5. Step 5: Solve for x
    x = 405,634,014,763.29/547,272.30
  6. Step 6: Final answer
    x = 741,192.30

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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.