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Finding the Fourth Proportional to 386,475.90, 579,022.65 and 327,032.70

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Solution

The fourth proportional to 386,475.90, 579,022.65 and 327,032.70 is: 489,964.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,475.90 : 579,022.65 = 327,032.70 : x
  2. Step 2: Convert to fraction form
    386,475.90/579,022.65 = 327,032.70/x
  3. Step 3: Cross multiply
    386,475.90x = 579,022.65 × 327,032.70
  4. Step 4: Simplify right side
    386,475.90x = 189,359,340,590.66
  5. Step 5: Solve for x
    x = 189,359,340,590.66/386,475.90
  6. Step 6: Final answer
    x = 489,964.16

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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.