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Finding the Fourth Proportional to 547,927.88, 822,057.89 and 388,312.42

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Solution

The fourth proportional to 547,927.88, 822,057.89 and 388,312.42 is: 582,586.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,927.88 : 822,057.89 = 388,312.42 : x
  2. Step 2: Convert to fraction form
    547,927.88/822,057.89 = 388,312.42/x
  3. Step 3: Cross multiply
    547,927.88x = 822,057.89 × 388,312.42
  4. Step 4: Simplify right side
    547,927.88x = 319,215,288,645.99
  5. Step 5: Solve for x
    x = 319,215,288,645.99/547,927.88
  6. Step 6: Final answer
    x = 582,586.32

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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.