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Finding the Fourth Proportional to 668,980.40, 923,193.59 and 363,056.85

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Solution

The fourth proportional to 668,980.40, 923,193.59 and 363,056.85 is: 501,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,980.40 : 923,193.59 = 363,056.85 : x
  2. Step 2: Convert to fraction form
    668,980.40/923,193.59 = 363,056.85/x
  3. Step 3: Cross multiply
    668,980.40x = 923,193.59 × 363,056.85
  4. Step 4: Simplify right side
    668,980.40x = 335,171,754,910.31
  5. Step 5: Solve for x
    x = 335,171,754,910.31/668,980.40
  6. Step 6: Final answer
    x = 501,018.80

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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.