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Finding the Fourth Proportional to 384,511.78, 576,767.55 and 279,995.86

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Solution

The fourth proportional to 384,511.78, 576,767.55 and 279,995.86 is: 419,993.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,511.78 : 576,767.55 = 279,995.86 : x
  2. Step 2: Convert to fraction form
    384,511.78/576,767.55 = 279,995.86/x
  3. Step 3: Cross multiply
    384,511.78x = 576,767.55 × 279,995.86
  4. Step 4: Simplify right side
    384,511.78x = 161,492,526,182.34
  5. Step 5: Solve for x
    x = 161,492,526,182.34/384,511.78
  6. Step 6: Final answer
    x = 419,993.70

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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.