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Finding the Fourth Proportional to 478,455.64, 660,269 and 263,593.82

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Solution

The fourth proportional to 478,455.64, 660,269 and 263,593.82 is: 363,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,455.64 : 660,269 = 263,593.82 : x
  2. Step 2: Convert to fraction form
    478,455.64/660,269 = 263,593.82/x
  3. Step 3: Cross multiply
    478,455.64x = 660,269 × 263,593.82
  4. Step 4: Simplify right side
    478,455.64x = 174,042,827,937.58
  5. Step 5: Solve for x
    x = 174,042,827,937.58/478,455.64
  6. Step 6: Final answer
    x = 363,759.59

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1.5x scale

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.