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Finding the Fourth Proportional to 666,117.60, 999,322.20 and 329,319.60

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Solution

The fourth proportional to 666,117.60, 999,322.20 and 329,319.60 is: 494,051.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,117.60 : 999,322.20 = 329,319.60 : x
  2. Step 2: Convert to fraction form
    666,117.60/999,322.20 = 329,319.60/x
  3. Step 3: Cross multiply
    666,117.60x = 999,322.20 × 329,319.60
  4. Step 4: Simplify right side
    666,117.60x = 329,096,387,175.12
  5. Step 5: Solve for x
    x = 329,096,387,175.12/666,117.60
  6. Step 6: Final answer
    x = 494,051.48

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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.