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Finding the Fourth Proportional to 486,320.76, 729,737.91 and 345,078.63

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Solution

The fourth proportional to 486,320.76, 729,737.91 and 345,078.63 is: 517,800.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,320.76 : 729,737.91 = 345,078.63 : x
  2. Step 2: Convert to fraction form
    486,320.76/729,737.91 = 345,078.63/x
  3. Step 3: Cross multiply
    486,320.76x = 729,737.91 × 345,078.63
  4. Step 4: Simplify right side
    486,320.76x = 251,816,958,241.86
  5. Step 5: Solve for x
    x = 251,816,958,241.86/486,320.76
  6. Step 6: Final answer
    x = 517,800.14

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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.