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Finding the Fourth Proportional to 666,883.48, 920,299.10 and 360,959.78

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Solution

The fourth proportional to 666,883.48, 920,299.10 and 360,959.78 is: 498,124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,883.48 : 920,299.10 = 360,959.78 : x
  2. Step 2: Convert to fraction form
    666,883.48/920,299.10 = 360,959.78/x
  3. Step 3: Cross multiply
    666,883.48x = 920,299.10 × 360,959.78
  4. Step 4: Simplify right side
    666,883.48x = 332,190,960,670.20
  5. Step 5: Solve for x
    x = 332,190,960,670.20/666,883.48
  6. Step 6: Final answer
    x = 498,124.44

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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.