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Finding the Fourth Proportional to 997,672.80, 1,496,727.90 and 323,639.40

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Solution

The fourth proportional to 997,672.80, 1,496,727.90 and 323,639.40 is: 485,530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,672.80 : 1,496,727.90 = 323,639.40 : x
  2. Step 2: Convert to fraction form
    997,672.80/1,496,727.90 = 323,639.40/x
  3. Step 3: Cross multiply
    997,672.80x = 1,496,727.90 × 323,639.40
  4. Step 4: Simplify right side
    997,672.80x = 484,400,119,519.26
  5. Step 5: Solve for x
    x = 484,400,119,519.26/997,672.80
  6. Step 6: Final answer
    x = 485,530.05

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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.