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Finding the Fourth Proportional to 654,712.80, 982,069.20 and 512,995.20

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Solution

The fourth proportional to 654,712.80, 982,069.20 and 512,995.20 is: 769,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,712.80 : 982,069.20 = 512,995.20 : x
  2. Step 2: Convert to fraction form
    654,712.80/982,069.20 = 512,995.20/x
  3. Step 3: Cross multiply
    654,712.80x = 982,069.20 × 512,995.20
  4. Step 4: Simplify right side
    654,712.80x = 503,796,785,667.84
  5. Step 5: Solve for x
    x = 503,796,785,667.84/654,712.80
  6. Step 6: Final answer
    x = 769,492.80

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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.