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Finding the Fourth Proportional to 478,487.72, 717,054.53 and 265,349.39

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Solution

The fourth proportional to 478,487.72, 717,054.53 and 265,349.39 is: 397,648.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,487.72 : 717,054.53 = 265,349.39 : x
  2. Step 2: Convert to fraction form
    478,487.72/717,054.53 = 265,349.39/x
  3. Step 3: Cross multiply
    478,487.72x = 717,054.53 × 265,349.39
  4. Step 4: Simplify right side
    478,487.72x = 190,269,977,220.22
  5. Step 5: Solve for x
    x = 190,269,977,220.22/478,487.72
  6. Step 6: Final answer
    x = 397,648.61

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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.