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Finding the Fourth Proportional to 619,843.48, 930,263.34 and 320,411.68

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Solution

The fourth proportional to 619,843.48, 930,263.34 and 320,411.68 is: 480,875.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,843.48 : 930,263.34 = 320,411.68 : x
  2. Step 2: Convert to fraction form
    619,843.48/930,263.34 = 320,411.68/x
  3. Step 3: Cross multiply
    619,843.48x = 930,263.34 × 320,411.68
  4. Step 4: Simplify right side
    619,843.48x = 298,067,239,611.81
  5. Step 5: Solve for x
    x = 298,067,239,611.81/619,843.48
  6. Step 6: Final answer
    x = 480,875.01

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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.