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Finding the Fourth Proportional to 667,884.40, 999,313.98 and 410,822.80

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Solution

The fourth proportional to 667,884.40, 999,313.98 and 410,822.80 is: 614,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,884.40 : 999,313.98 = 410,822.80 : x
  2. Step 2: Convert to fraction form
    667,884.40/999,313.98 = 410,822.80/x
  3. Step 3: Cross multiply
    667,884.40x = 999,313.98 × 410,822.80
  4. Step 4: Simplify right side
    667,884.40x = 410,540,967,342.74
  5. Step 5: Solve for x
    x = 410,540,967,342.74/667,884.40
  6. Step 6: Final answer
    x = 614,688.66

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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.