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Finding the Fourth Proportional to 605,415.06, 907,651.35 and 391,731.48

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Solution

The fourth proportional to 605,415.06, 907,651.35 and 391,731.48 is: 587,292.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,415.06 : 907,651.35 = 391,731.48 : x
  2. Step 2: Convert to fraction form
    605,415.06/907,651.35 = 391,731.48/x
  3. Step 3: Cross multiply
    605,415.06x = 907,651.35 × 391,731.48
  4. Step 4: Simplify right side
    605,415.06x = 355,555,606,659.50
  5. Step 5: Solve for x
    x = 355,555,606,659.50/605,415.06
  6. Step 6: Final answer
    x = 587,292.31

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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.