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Finding the Fourth Proportional to 479,500.40, 717,983.40 and 384,287.60

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Solution

The fourth proportional to 479,500.40, 717,983.40 and 384,287.60 is: 575,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,500.40 : 717,983.40 = 384,287.60 : x
  2. Step 2: Convert to fraction form
    479,500.40/717,983.40 = 384,287.60/x
  3. Step 3: Cross multiply
    479,500.40x = 717,983.40 × 384,287.60
  4. Step 4: Simplify right side
    479,500.40x = 275,912,117,625.84
  5. Step 5: Solve for x
    x = 275,912,117,625.84/479,500.40
  6. Step 6: Final answer
    x = 575,415.82

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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.