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Finding the Fourth Proportional to 605,417.06, 907,654.35 and 391,733.48

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Solution

The fourth proportional to 605,417.06, 907,654.35 and 391,733.48 is: 587,295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,417.06 : 907,654.35 = 391,733.48 : x
  2. Step 2: Convert to fraction form
    605,417.06/907,654.35 = 391,733.48/x
  3. Step 3: Cross multiply
    605,417.06x = 907,654.35 × 391,733.48
  4. Step 4: Simplify right side
    605,417.06x = 355,558,597,162.64
  5. Step 5: Solve for x
    x = 355,558,597,162.64/605,417.06
  6. Step 6: Final answer
    x = 587,295.31

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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.