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Finding the Fourth Proportional to 478,571.79, 717,181.09 and 265,433.61

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Solution

The fourth proportional to 478,571.79, 717,181.09 and 265,433.61 is: 397,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,571.79 : 717,181.09 = 265,433.61 : x
  2. Step 2: Convert to fraction form
    478,571.79/717,181.09 = 265,433.61/x
  3. Step 3: Cross multiply
    478,571.79x = 717,181.09 × 265,433.61
  4. Step 4: Simplify right side
    478,571.79x = 190,363,963,734.14
  5. Step 5: Solve for x
    x = 190,363,963,734.14/478,571.79
  6. Step 6: Final answer
    x = 397,775.14

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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.