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Finding the Fourth Proportional to 392,888.85, 588,827.79 and 342,079.98

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Solution

The fourth proportional to 392,888.85, 588,827.79 and 342,079.98 is: 512,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,888.85 : 588,827.79 = 342,079.98 : x
  2. Step 2: Convert to fraction form
    392,888.85/588,827.79 = 342,079.98/x
  3. Step 3: Cross multiply
    392,888.85x = 588,827.79 × 342,079.98
  4. Step 4: Simplify right side
    392,888.85x = 201,426,198,626.64
  5. Step 5: Solve for x
    x = 201,426,198,626.64/392,888.85
  6. Step 6: Final answer
    x = 512,679.85

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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.