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Finding the Fourth Proportional to 554,805.20, 831,721.80 and 376,734.80

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Solution

The fourth proportional to 554,805.20, 831,721.80 and 376,734.80 is: 564,772.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,805.20 : 831,721.80 = 376,734.80 : x
  2. Step 2: Convert to fraction form
    554,805.20/831,721.80 = 376,734.80/x
  3. Step 3: Cross multiply
    554,805.20x = 831,721.80 × 376,734.80
  4. Step 4: Simplify right side
    554,805.20x = 313,338,545,978.64
  5. Step 5: Solve for x
    x = 313,338,545,978.64/554,805.20
  6. Step 6: Final answer
    x = 564,772.19

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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.