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Finding the Fourth Proportional to 554,306.88, 831,201.84 and 287,995.80

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Solution

The fourth proportional to 554,306.88, 831,201.84 and 287,995.80 is: 431,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,306.88 : 831,201.84 = 287,995.80 : x
  2. Step 2: Convert to fraction form
    554,306.88/831,201.84 = 287,995.80/x
  3. Step 3: Cross multiply
    554,306.88x = 831,201.84 × 287,995.80
  4. Step 4: Simplify right side
    554,306.88x = 239,382,638,872.27
  5. Step 5: Solve for x
    x = 239,382,638,872.27/554,306.88
  6. Step 6: Final answer
    x = 431,859.40

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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.