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Finding the Fourth Proportional to 458,627.60, 686,904.60 and 272,003.60

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Solution

The fourth proportional to 458,627.60, 686,904.60 and 272,003.60 is: 407,390.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,627.60 : 686,904.60 = 272,003.60 : x
  2. Step 2: Convert to fraction form
    458,627.60/686,904.60 = 272,003.60/x
  3. Step 3: Cross multiply
    458,627.60x = 686,904.60 × 272,003.60
  4. Step 4: Simplify right side
    458,627.60x = 186,840,524,056.56
  5. Step 5: Solve for x
    x = 186,840,524,056.56/458,627.60
  6. Step 6: Final answer
    x = 407,390.49

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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.