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Finding the Fourth Proportional to 392,695.80, 589,043.70 and 363,827.40

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Solution

The fourth proportional to 392,695.80, 589,043.70 and 363,827.40 is: 545,741.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,695.80 : 589,043.70 = 363,827.40 : x
  2. Step 2: Convert to fraction form
    392,695.80/589,043.70 = 363,827.40/x
  3. Step 3: Cross multiply
    392,695.80x = 589,043.70 × 363,827.40
  4. Step 4: Simplify right side
    392,695.80x = 214,310,237,857.38
  5. Step 5: Solve for x
    x = 214,310,237,857.38/392,695.80
  6. Step 6: Final answer
    x = 545,741.10

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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.