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Finding the Fourth Proportional to 605,129.60, 907,694.40 and 511,817.60

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Solution

The fourth proportional to 605,129.60, 907,694.40 and 511,817.60 is: 767,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,129.60 : 907,694.40 = 511,817.60 : x
  2. Step 2: Convert to fraction form
    605,129.60/907,694.40 = 511,817.60/x
  3. Step 3: Cross multiply
    605,129.60x = 907,694.40 × 511,817.60
  4. Step 4: Simplify right side
    605,129.60x = 464,573,969,341.44
  5. Step 5: Solve for x
    x = 464,573,969,341.44/605,129.60
  6. Step 6: Final answer
    x = 767,726.40

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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.