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Finding the Fourth Proportional to 639,612.04, 957,888.50 and 368,919.58

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Solution

The fourth proportional to 639,612.04, 957,888.50 and 368,919.58 is: 552,497.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,612.04 : 957,888.50 = 368,919.58 : x
  2. Step 2: Convert to fraction form
    639,612.04/957,888.50 = 368,919.58/x
  3. Step 3: Cross multiply
    639,612.04x = 957,888.50 × 368,919.58
  4. Step 4: Simplify right side
    639,612.04x = 353,383,823,106.83
  5. Step 5: Solve for x
    x = 353,383,823,106.83/639,612.04
  6. Step 6: Final answer
    x = 552,497.14

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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.