Home / 666,939.80-999,729.30-329,461.40

Finding the Fourth Proportional to 666,939.80, 999,729.30 and 329,461.40

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Solution

The fourth proportional to 666,939.80, 999,729.30 and 329,461.40 is: 493,855.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,939.80 : 999,729.30 = 329,461.40 : x
  2. Step 2: Convert to fraction form
    666,939.80/999,729.30 = 329,461.40/x
  3. Step 3: Cross multiply
    666,939.80x = 999,729.30 × 329,461.40
  4. Step 4: Simplify right side
    666,939.80x = 329,372,214,799.02
  5. Step 5: Solve for x
    x = 329,372,214,799.02/666,939.80
  6. Step 6: Final answer
    x = 493,855.99

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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.