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Finding the Fourth Proportional to 658,814.40, 988,367.40 and 303,742.80

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Solution

The fourth proportional to 658,814.40, 988,367.40 and 303,742.80 is: 455,681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,814.40 : 988,367.40 = 303,742.80 : x
  2. Step 2: Convert to fraction form
    658,814.40/988,367.40 = 303,742.80/x
  3. Step 3: Cross multiply
    658,814.40x = 988,367.40 × 303,742.80
  4. Step 4: Simplify right side
    658,814.40x = 300,209,481,504.72
  5. Step 5: Solve for x
    x = 300,209,481,504.72/658,814.40
  6. Step 6: Final answer
    x = 455,681.42

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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.