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Finding the Fourth Proportional to 614,843.70, 848,485.80 and 342,929.21

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Solution

The fourth proportional to 614,843.70, 848,485.80 and 342,929.21 is: 473,243.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,843.70 : 848,485.80 = 342,929.21 : x
  2. Step 2: Convert to fraction form
    614,843.70/848,485.80 = 342,929.21/x
  3. Step 3: Cross multiply
    614,843.70x = 848,485.80 × 342,929.21
  4. Step 4: Simplify right side
    614,843.70x = 290,970,560,847.79
  5. Step 5: Solve for x
    x = 290,970,560,847.79/614,843.70
  6. Step 6: Final answer
    x = 473,243.14

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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.