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Finding the Fourth Proportional to 447,765.92, 616,866.04 and 311,565.64

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Solution

The fourth proportional to 447,765.92, 616,866.04 and 311,565.64 is: 429,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,765.92 : 616,866.04 = 311,565.64 : x
  2. Step 2: Convert to fraction form
    447,765.92/616,866.04 = 311,565.64/x
  3. Step 3: Cross multiply
    447,765.92x = 616,866.04 × 311,565.64
  4. Step 4: Simplify right side
    447,765.92x = 192,194,262,546.87
  5. Step 5: Solve for x
    x = 192,194,262,546.87/447,765.92
  6. Step 6: Final answer
    x = 429,229.32

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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.