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Finding the Fourth Proportional to 425,907.84, 639,277.26 and 351,783.12

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Solution

The fourth proportional to 425,907.84, 639,277.26 and 351,783.12 is: 528,017.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,907.84 : 639,277.26 = 351,783.12 : x
  2. Step 2: Convert to fraction form
    425,907.84/639,277.26 = 351,783.12/x
  3. Step 3: Cross multiply
    425,907.84x = 639,277.26 × 351,783.12
  4. Step 4: Simplify right side
    425,907.84x = 224,886,949,067.85
  5. Step 5: Solve for x
    x = 224,886,949,067.85/425,907.84
  6. Step 6: Final answer
    x = 528,017.87

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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.