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Finding the Fourth Proportional to 639,883.44, 883,031.76 and 349,493.58

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Solution

The fourth proportional to 639,883.44, 883,031.76 and 349,493.58 is: 482,297.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,883.44 : 883,031.76 = 349,493.58 : x
  2. Step 2: Convert to fraction form
    639,883.44/883,031.76 = 349,493.58/x
  3. Step 3: Cross multiply
    639,883.44x = 883,031.76 × 349,493.58
  4. Step 4: Simplify right side
    639,883.44x = 308,613,931,056.10
  5. Step 5: Solve for x
    x = 308,613,931,056.10/639,883.44
  6. Step 6: Final answer
    x = 482,297.11

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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.