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Finding the Fourth Proportional to 645,479.36, 967,333.27 and 408,397.63

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Solution

The fourth proportional to 645,479.36, 967,333.27 and 408,397.63 is: 612,036.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,479.36 : 967,333.27 = 408,397.63 : x
  2. Step 2: Convert to fraction form
    645,479.36/967,333.27 = 408,397.63/x
  3. Step 3: Cross multiply
    645,479.36x = 967,333.27 × 408,397.63
  4. Step 4: Simplify right side
    645,479.36x = 395,056,608,009.50
  5. Step 5: Solve for x
    x = 395,056,608,009.50/645,479.36
  6. Step 6: Final answer
    x = 612,036.00

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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.