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Finding the Fourth Proportional to 492,502.80, 679,759.53 and 311,099.34

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Solution

The fourth proportional to 492,502.80, 679,759.53 and 311,099.34 is: 429,383.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,502.80 : 679,759.53 = 311,099.34 : x
  2. Step 2: Convert to fraction form
    492,502.80/679,759.53 = 311,099.34/x
  3. Step 3: Cross multiply
    492,502.80x = 679,759.53 × 311,099.34
  4. Step 4: Simplify right side
    492,502.80x = 211,472,741,141.71
  5. Step 5: Solve for x
    x = 211,472,741,141.71/492,502.80
  6. Step 6: Final answer
    x = 429,383.84

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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.