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Finding the Fourth Proportional to 639,967.29, 883,157.88 and 349,582.89

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Solution

The fourth proportional to 639,967.29, 883,157.88 and 349,582.89 is: 482,426.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,967.29 : 883,157.88 = 349,582.89 : x
  2. Step 2: Convert to fraction form
    639,967.29/883,157.88 = 349,582.89/x
  3. Step 3: Cross multiply
    639,967.29x = 883,157.88 × 349,582.89
  4. Step 4: Simplify right side
    639,967.29x = 308,736,878,238.20
  5. Step 5: Solve for x
    x = 308,736,878,238.20/639,967.29
  6. Step 6: Final answer
    x = 482,426.03

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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.