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Finding the Fourth Proportional to 554,175.53, 831,004.95 and 287,864.54

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Solution

The fourth proportional to 554,175.53, 831,004.95 and 287,864.54 is: 431,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,175.53 : 831,004.95 = 287,864.54 : x
  2. Step 2: Convert to fraction form
    554,175.53/831,004.95 = 287,864.54/x
  3. Step 3: Cross multiply
    554,175.53x = 831,004.95 × 287,864.54
  4. Step 4: Simplify right side
    554,175.53x = 239,216,857,710.21
  5. Step 5: Solve for x
    x = 239,216,857,710.21/554,175.53
  6. Step 6: Final answer
    x = 431,662.61

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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.