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Finding the Fourth Proportional to 437,779, 655,818.81 and 287,563.49

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Solution

The fourth proportional to 437,779, 655,818.81 and 287,563.49 is: 430,787.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,779 : 655,818.81 = 287,563.49 : x
  2. Step 2: Convert to fraction form
    437,779/655,818.81 = 287,563.49/x
  3. Step 3: Cross multiply
    437,779x = 655,818.81 × 287,563.49
  4. Step 4: Simplify right side
    437,779x = 188,589,545,811.25
  5. Step 5: Solve for x
    x = 188,589,545,811.25/437,779
  6. Step 6: Final answer
    x = 430,787.10

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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.