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Finding the Fourth Proportional to 621,409.96, 930,110.16 and 321,477.52

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Solution

The fourth proportional to 621,409.96, 930,110.16 and 321,477.52 is: 481,179.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,409.96 : 930,110.16 = 321,477.52 : x
  2. Step 2: Convert to fraction form
    621,409.96/930,110.16 = 321,477.52/x
  3. Step 3: Cross multiply
    621,409.96x = 930,110.16 × 321,477.52
  4. Step 4: Simplify right side
    621,409.96x = 299,009,507,563.60
  5. Step 5: Solve for x
    x = 299,009,507,563.60/621,409.96
  6. Step 6: Final answer
    x = 481,179.14

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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.