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Finding the Fourth Proportional to 2,632,776, 3,949,164 and 638,232

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Solution

The fourth proportional to 2,632,776, 3,949,164 and 638,232 is: 957,348

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,632,776 : 3,949,164 = 638,232 : x
  2. Step 2: Convert to fraction form
    2,632,776/3,949,164 = 638,232/x
  3. Step 3: Cross multiply
    2,632,776x = 3,949,164 × 638,232
  4. Step 4: Simplify right side
    2,632,776x = 2,520,482,838,048
  5. Step 5: Solve for x
    x = 2,520,482,838,048/2,632,776
  6. Step 6: Final answer
    x = 957,348

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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.