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Finding the Fourth Proportional to 654,706.80, 982,060.20 and 512,989.20

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Solution

The fourth proportional to 654,706.80, 982,060.20 and 512,989.20 is: 769,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,706.80 : 982,060.20 = 512,989.20 : x
  2. Step 2: Convert to fraction form
    654,706.80/982,060.20 = 512,989.20/x
  3. Step 3: Cross multiply
    654,706.80x = 982,060.20 × 512,989.20
  4. Step 4: Simplify right side
    654,706.80x = 503,786,276,349.84
  5. Step 5: Solve for x
    x = 503,786,276,349.84/654,706.80
  6. Step 6: Final answer
    x = 769,483.80

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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.