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Finding the Fourth Proportional to 392,686.30, 589,029.45 and 341,364.70

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Solution

The fourth proportional to 392,686.30, 589,029.45 and 341,364.70 is: 512,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,686.30 : 589,029.45 = 341,364.70 : x
  2. Step 2: Convert to fraction form
    392,686.30/589,029.45 = 341,364.70/x
  3. Step 3: Cross multiply
    392,686.30x = 589,029.45 × 341,364.70
  4. Step 4: Simplify right side
    392,686.30x = 201,073,861,490.42
  5. Step 5: Solve for x
    x = 201,073,861,490.42/392,686.30
  6. Step 6: Final answer
    x = 512,047.05

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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.