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Finding the Fourth Proportional to 553,687.90, 828,563.55 and 384,414.10

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Solution

The fourth proportional to 553,687.90, 828,563.55 and 384,414.10 is: 575,254.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,687.90 : 828,563.55 = 384,414.10 : x
  2. Step 2: Convert to fraction form
    553,687.90/828,563.55 = 384,414.10/x
  3. Step 3: Cross multiply
    553,687.90x = 828,563.55 × 384,414.10
  4. Step 4: Simplify right side
    553,687.90x = 318,511,511,366.06
  5. Step 5: Solve for x
    x = 318,511,511,366.06/553,687.90
  6. Step 6: Final answer
    x = 575,254.60

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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.