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Finding the Fourth Proportional to 553,660.10, 831,474.30 and 404,069.30

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Solution

The fourth proportional to 553,660.10, 831,474.30 and 404,069.30 is: 606,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,660.10 : 831,474.30 = 404,069.30 : x
  2. Step 2: Convert to fraction form
    553,660.10/831,474.30 = 404,069.30/x
  3. Step 3: Cross multiply
    553,660.10x = 831,474.30 × 404,069.30
  4. Step 4: Simplify right side
    553,660.10x = 335,973,238,368.99
  5. Step 5: Solve for x
    x = 335,973,238,368.99/553,660.10
  6. Step 6: Final answer
    x = 606,822.20

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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.