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Finding the Fourth Proportional to 640,481.28, 883,848.77 and 350,079.80

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Solution

The fourth proportional to 640,481.28, 883,848.77 and 350,079.80 is: 483,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,481.28 : 883,848.77 = 350,079.80 : x
  2. Step 2: Convert to fraction form
    640,481.28/883,848.77 = 350,079.80/x
  3. Step 3: Cross multiply
    640,481.28x = 883,848.77 × 350,079.80
  4. Step 4: Simplify right side
    640,481.28x = 309,417,594,462.20
  5. Step 5: Solve for x
    x = 309,417,594,462.20/640,481.28
  6. Step 6: Final answer
    x = 483,101.70

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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.