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Finding the Fourth Proportional to 554,182.83, 831,015.90 and 287,871.84

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Solution

The fourth proportional to 554,182.83, 831,015.90 and 287,871.84 is: 431,673.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,182.83 : 831,015.90 = 287,871.84 : x
  2. Step 2: Convert to fraction form
    554,182.83/831,015.90 = 287,871.84/x
  3. Step 3: Cross multiply
    554,182.83x = 831,015.90 × 287,871.84
  4. Step 4: Simplify right side
    554,182.83x = 239,226,076,202.26
  5. Step 5: Solve for x
    x = 239,226,076,202.26/554,182.83
  6. Step 6: Final answer
    x = 431,673.56

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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.