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Finding the Fourth Proportional to 554,307.88, 831,203.34 and 287,996.80

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Solution

The fourth proportional to 554,307.88, 831,203.34 and 287,996.80 is: 431,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,307.88 : 831,203.34 = 287,996.80 : x
  2. Step 2: Convert to fraction form
    554,307.88/831,203.34 = 287,996.80/x
  3. Step 3: Cross multiply
    554,307.88x = 831,203.34 × 287,996.80
  4. Step 4: Simplify right side
    554,307.88x = 239,383,902,069.31
  5. Step 5: Solve for x
    x = 239,383,902,069.31/554,307.88
  6. Step 6: Final answer
    x = 431,860.90

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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.