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Finding the Fourth Proportional to 393,864.60, 589,922.10 and 341,376.60

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Solution

The fourth proportional to 393,864.60, 589,922.10 and 341,376.60 is: 511,306.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,864.60 : 589,922.10 = 341,376.60 : x
  2. Step 2: Convert to fraction form
    393,864.60/589,922.10 = 341,376.60/x
  3. Step 3: Cross multiply
    393,864.60x = 589,922.10 × 341,376.60
  4. Step 4: Simplify right side
    393,864.60x = 201,385,600,762.86
  5. Step 5: Solve for x
    x = 201,385,600,762.86/393,864.60
  6. Step 6: Final answer
    x = 511,306.68

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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.