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Finding the Fourth Proportional to 479,903.90, 720,001.65 and 269,401.10

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Solution

The fourth proportional to 479,903.90, 720,001.65 and 269,401.10 is: 404,183.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,903.90 : 720,001.65 = 269,401.10 : x
  2. Step 2: Convert to fraction form
    479,903.90/720,001.65 = 269,401.10/x
  3. Step 3: Cross multiply
    479,903.90x = 720,001.65 × 269,401.10
  4. Step 4: Simplify right side
    479,903.90x = 193,969,236,511.82
  5. Step 5: Solve for x
    x = 193,969,236,511.82/479,903.90
  6. Step 6: Final answer
    x = 404,183.50

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1.5x scale

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.