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Finding the Fourth Proportional to 486,366.60, 730,010.70 and 299,742.60

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Solution

The fourth proportional to 486,366.60, 730,010.70 and 299,742.60 is: 449,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,366.60 : 730,010.70 = 299,742.60 : x
  2. Step 2: Convert to fraction form
    486,366.60/730,010.70 = 299,742.60/x
  3. Step 3: Cross multiply
    486,366.60x = 730,010.70 × 299,742.60
  4. Step 4: Simplify right side
    486,366.60x = 218,815,305,245.82
  5. Step 5: Solve for x
    x = 218,815,305,245.82/486,366.60
  6. Step 6: Final answer
    x = 449,897.89

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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.