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Finding the Fourth Proportional to 418,529.62, 577,662.60 and 275,303.80

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Solution

The fourth proportional to 418,529.62, 577,662.60 and 275,303.80 is: 379,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,529.62 : 577,662.60 = 275,303.80 : x
  2. Step 2: Convert to fraction form
    418,529.62/577,662.60 = 275,303.80/x
  3. Step 3: Cross multiply
    418,529.62x = 577,662.60 × 275,303.80
  4. Step 4: Simplify right side
    418,529.62x = 159,032,708,897.88
  5. Step 5: Solve for x
    x = 159,032,708,897.88/418,529.62
  6. Step 6: Final answer
    x = 379,979.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.