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Finding the Fourth Proportional to 605,197.68, 905,268.25 and 425,270.45

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Solution

The fourth proportional to 605,197.68, 905,268.25 and 425,270.45 is: 636,129.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,197.68 : 905,268.25 = 425,270.45 : x
  2. Step 2: Convert to fraction form
    605,197.68/905,268.25 = 425,270.45/x
  3. Step 3: Cross multiply
    605,197.68x = 905,268.25 × 425,270.45
  4. Step 4: Simplify right side
    605,197.68x = 384,983,838,842.97
  5. Step 5: Solve for x
    x = 384,983,838,842.97/605,197.68
  6. Step 6: Final answer
    x = 636,129.08

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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.