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Finding the Fourth Proportional to 554,758.20, 831,651.30 and 376,687.80

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Solution

The fourth proportional to 554,758.20, 831,651.30 and 376,687.80 is: 564,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,758.20 : 831,651.30 = 376,687.80 : x
  2. Step 2: Convert to fraction form
    554,758.20/831,651.30 = 376,687.80/x
  3. Step 3: Cross multiply
    554,758.20x = 831,651.30 × 376,687.80
  4. Step 4: Simplify right side
    554,758.20x = 313,272,898,564.14
  5. Step 5: Solve for x
    x = 313,272,898,564.14/554,758.20
  6. Step 6: Final answer
    x = 564,701.70

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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.