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Finding the Fourth Proportional to 648,198.60, 971,471.70 and 363,888.60

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Solution

The fourth proportional to 648,198.60, 971,471.70 and 363,888.60 is: 545,369.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,198.60 : 971,471.70 = 363,888.60 : x
  2. Step 2: Convert to fraction form
    648,198.60/971,471.70 = 363,888.60/x
  3. Step 3: Cross multiply
    648,198.60x = 971,471.70 × 363,888.60
  4. Step 4: Simplify right side
    648,198.60x = 353,507,476,852.62
  5. Step 5: Solve for x
    x = 353,507,476,852.62/648,198.60
  6. Step 6: Final answer
    x = 545,369.08

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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.