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Finding the Fourth Proportional to 486,109.70, 729,164.55 and 486,109.70

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Solution

The fourth proportional to 486,109.70, 729,164.55 and 486,109.70 is: 729,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,109.70 : 729,164.55 = 486,109.70 : x
  2. Step 2: Convert to fraction form
    486,109.70/729,164.55 = 486,109.70/x
  3. Step 3: Cross multiply
    486,109.70x = 729,164.55 × 486,109.70
  4. Step 4: Simplify right side
    486,109.70x = 354,453,960,651.14
  5. Step 5: Solve for x
    x = 354,453,960,651.14/486,109.70
  6. Step 6: Final answer
    x = 729,164.55

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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.