Home / 423,979.56-634,584.78-311,630.04

Finding the Fourth Proportional to 423,979.56, 634,584.78 and 311,630.04

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Solution

The fourth proportional to 423,979.56, 634,584.78 and 311,630.04 is: 466,427.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,979.56 : 634,584.78 = 311,630.04 : x
  2. Step 2: Convert to fraction form
    423,979.56/634,584.78 = 311,630.04/x
  3. Step 3: Cross multiply
    423,979.56x = 634,584.78 × 311,630.04
  4. Step 4: Simplify right side
    423,979.56x = 197,755,680,374.79
  5. Step 5: Solve for x
    x = 197,755,680,374.79/423,979.56
  6. Step 6: Final answer
    x = 466,427.39

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1.5x scale

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.