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Finding the Fourth Proportional to 658,869.60, 988,012.80 and 303,700.80

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Solution

The fourth proportional to 658,869.60, 988,012.80 and 303,700.80 is: 455,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,869.60 : 988,012.80 = 303,700.80 : x
  2. Step 2: Convert to fraction form
    658,869.60/988,012.80 = 303,700.80/x
  3. Step 3: Cross multiply
    658,869.60x = 988,012.80 × 303,700.80
  4. Step 4: Simplify right side
    658,869.60x = 300,060,277,770.24
  5. Step 5: Solve for x
    x = 300,060,277,770.24/658,869.60
  6. Step 6: Final answer
    x = 455,416.79

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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.