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Finding the Fourth Proportional to 671,022.50, 925,705.92 and 398,936.01

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Solution

The fourth proportional to 671,022.50, 925,705.92 and 398,936.01 is: 550,350.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,022.50 : 925,705.92 = 398,936.01 : x
  2. Step 2: Convert to fraction form
    671,022.50/925,705.92 = 398,936.01/x
  3. Step 3: Cross multiply
    671,022.50x = 925,705.92 × 398,936.01
  4. Step 4: Simplify right side
    671,022.50x = 369,297,426,158.18
  5. Step 5: Solve for x
    x = 369,297,426,158.18/671,022.50
  6. Step 6: Final answer
    x = 550,350.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.