Home / 645,056.40-966,778.20-329,638.80

Finding the Fourth Proportional to 645,056.40, 966,778.20 and 329,638.80

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Solution

The fourth proportional to 645,056.40, 966,778.20 and 329,638.80 is: 494,046.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,056.40 : 966,778.20 = 329,638.80 : x
  2. Step 2: Convert to fraction form
    645,056.40/966,778.20 = 329,638.80/x
  3. Step 3: Cross multiply
    645,056.40x = 966,778.20 × 329,638.80
  4. Step 4: Simplify right side
    645,056.40x = 318,687,605,714.16
  5. Step 5: Solve for x
    x = 318,687,605,714.16/645,056.40
  6. Step 6: Final answer
    x = 494,046.11

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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.