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Finding the Fourth Proportional to 438,650.40, 656,420.40 and 298,682.40

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Solution

The fourth proportional to 438,650.40, 656,420.40 and 298,682.40 is: 446,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,650.40 : 656,420.40 = 298,682.40 : x
  2. Step 2: Convert to fraction form
    438,650.40/656,420.40 = 298,682.40/x
  3. Step 3: Cross multiply
    438,650.40x = 656,420.40 × 298,682.40
  4. Step 4: Simplify right side
    438,650.40x = 196,061,220,480.96
  5. Step 5: Solve for x
    x = 196,061,220,480.96/438,650.40
  6. Step 6: Final answer
    x = 446,964.65

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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.