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Finding the Fourth Proportional to 465,773.20, 698,659.80 and 387,041.20

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Solution

The fourth proportional to 465,773.20, 698,659.80 and 387,041.20 is: 580,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,773.20 : 698,659.80 = 387,041.20 : x
  2. Step 2: Convert to fraction form
    465,773.20/698,659.80 = 387,041.20/x
  3. Step 3: Cross multiply
    465,773.20x = 698,659.80 × 387,041.20
  4. Step 4: Simplify right side
    465,773.20x = 270,410,127,383.76
  5. Step 5: Solve for x
    x = 270,410,127,383.76/465,773.20
  6. Step 6: Final answer
    x = 580,561.80

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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.