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Finding the Fourth Proportional to 442,907.40, 663,669.90 and 383,464.20

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Solution

The fourth proportional to 442,907.40, 663,669.90 and 383,464.20 is: 574,597.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,907.40 : 663,669.90 = 383,464.20 : x
  2. Step 2: Convert to fraction form
    442,907.40/663,669.90 = 383,464.20/x
  3. Step 3: Cross multiply
    442,907.40x = 663,669.90 × 383,464.20
  4. Step 4: Simplify right side
    442,907.40x = 254,493,647,267.58
  5. Step 5: Solve for x
    x = 254,493,647,267.58/442,907.40
  6. Step 6: Final answer
    x = 574,597.87

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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.