Home / 812,872.58-1,220,065.41-413,812.10

Finding the Fourth Proportional to 812,872.58, 1,220,065.41 and 413,812.10

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Solution

The fourth proportional to 812,872.58, 1,220,065.41 and 413,812.10 is: 621,103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,872.58 : 1,220,065.41 = 413,812.10 : x
  2. Step 2: Convert to fraction form
    812,872.58/1,220,065.41 = 413,812.10/x
  3. Step 3: Cross multiply
    812,872.58x = 1,220,065.41 × 413,812.10
  4. Step 4: Simplify right side
    812,872.58x = 504,877,823,349.13
  5. Step 5: Solve for x
    x = 504,877,823,349.13/812,872.58
  6. Step 6: Final answer
    x = 621,103.28

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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.