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Finding the Fourth Proportional to 400,484.35, 600,649.98 and 120,001.60

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Solution

The fourth proportional to 400,484.35, 600,649.98 and 120,001.60 is: 179,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,484.35 : 600,649.98 = 120,001.60 : x
  2. Step 2: Convert to fraction form
    400,484.35/600,649.98 = 120,001.60/x
  3. Step 3: Cross multiply
    400,484.35x = 600,649.98 × 120,001.60
  4. Step 4: Simplify right side
    400,484.35x = 72,078,959,615.78
  5. Step 5: Solve for x
    x = 72,078,959,615.78/400,484.35
  6. Step 6: Final answer
    x = 179,979.47

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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.