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Finding the Fourth Proportional to 434,593.20, 651,889.80 and 418,846.80

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Solution

The fourth proportional to 434,593.20, 651,889.80 and 418,846.80 is: 628,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,593.20 : 651,889.80 = 418,846.80 : x
  2. Step 2: Convert to fraction form
    434,593.20/651,889.80 = 418,846.80/x
  3. Step 3: Cross multiply
    434,593.20x = 651,889.80 × 418,846.80
  4. Step 4: Simplify right side
    434,593.20x = 273,041,956,682.64
  5. Step 5: Solve for x
    x = 273,041,956,682.64/434,593.20
  6. Step 6: Final answer
    x = 628,270.20

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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.