Home / 412,946.20-619,880.10-385,874.20

Finding the Fourth Proportional to 412,946.20, 619,880.10 and 385,874.20

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Solution

The fourth proportional to 412,946.20, 619,880.10 and 385,874.20 is: 579,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,946.20 : 619,880.10 = 385,874.20 : x
  2. Step 2: Convert to fraction form
    412,946.20/619,880.10 = 385,874.20/x
  3. Step 3: Cross multiply
    412,946.20x = 619,880.10 × 385,874.20
  4. Step 4: Simplify right side
    412,946.20x = 239,195,737,683.42
  5. Step 5: Solve for x
    x = 239,195,737,683.42/412,946.20
  6. Step 6: Final answer
    x = 579,241.89

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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.