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Finding the Fourth Proportional to 614,997.50, 848,434.91 and 385,398.54

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Solution

The fourth proportional to 614,997.50, 848,434.91 and 385,398.54 is: 531,686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,997.50 : 848,434.91 = 385,398.54 : x
  2. Step 2: Convert to fraction form
    614,997.50/848,434.91 = 385,398.54/x
  3. Step 3: Cross multiply
    614,997.50x = 848,434.91 × 385,398.54
  4. Step 4: Simplify right side
    614,997.50x = 326,985,573,672.04
  5. Step 5: Solve for x
    x = 326,985,573,672.04/614,997.50
  6. Step 6: Final answer
    x = 531,686.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.