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Finding the Fourth Proportional to 492,435.56, 679,445.32 and 298,838.88

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Solution

The fourth proportional to 492,435.56, 679,445.32 and 298,838.88 is: 412,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,435.56 : 679,445.32 = 298,838.88 : x
  2. Step 2: Convert to fraction form
    492,435.56/679,445.32 = 298,838.88/x
  3. Step 3: Cross multiply
    492,435.56x = 679,445.32 × 298,838.88
  4. Step 4: Simplify right side
    492,435.56x = 203,044,678,450.04
  5. Step 5: Solve for x
    x = 203,044,678,450.04/492,435.56
  6. Step 6: Final answer
    x = 412,327.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.