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Finding the Fourth Proportional to 984,459.30, 1,476,506.70 and 274,340.40

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Solution

The fourth proportional to 984,459.30, 1,476,506.70 and 274,340.40 is: 411,459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,459.30 : 1,476,506.70 = 274,340.40 : x
  2. Step 2: Convert to fraction form
    984,459.30/1,476,506.70 = 274,340.40/x
  3. Step 3: Cross multiply
    984,459.30x = 1,476,506.70 × 274,340.40
  4. Step 4: Simplify right side
    984,459.30x = 405,065,438,680.68
  5. Step 5: Solve for x
    x = 405,065,438,680.68/984,459.30
  6. Step 6: Final answer
    x = 411,459.81

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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.