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Finding the Fourth Proportional to 543,816.60, 814,928.10 and 487,656.60

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Solution

The fourth proportional to 543,816.60, 814,928.10 and 487,656.60 is: 730,770.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,816.60 : 814,928.10 = 487,656.60 : x
  2. Step 2: Convert to fraction form
    543,816.60/814,928.10 = 487,656.60/x
  3. Step 3: Cross multiply
    543,816.60x = 814,928.10 × 487,656.60
  4. Step 4: Simplify right side
    543,816.60x = 397,405,066,490.46
  5. Step 5: Solve for x
    x = 397,405,066,490.46/543,816.60
  6. Step 6: Final answer
    x = 730,770.39

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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.