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Finding the Fourth Proportional to 656,390.40, 905,796.37 and 362,051.79

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Solution

The fourth proportional to 656,390.40, 905,796.37 and 362,051.79 is: 499,619.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,390.40 : 905,796.37 = 362,051.79 : x
  2. Step 2: Convert to fraction form
    656,390.40/905,796.37 = 362,051.79/x
  3. Step 3: Cross multiply
    656,390.40x = 905,796.37 × 362,051.79
  4. Step 4: Simplify right side
    656,390.40x = 327,945,192,153.29
  5. Step 5: Solve for x
    x = 327,945,192,153.29/656,390.40
  6. Step 6: Final answer
    x = 499,619.12

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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.