Home / 920,487.04-1,380,947.87-289,400.85

Finding the Fourth Proportional to 920,487.04, 1,380,947.87 and 289,400.85

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Solution

The fourth proportional to 920,487.04, 1,380,947.87 and 289,400.85 is: 434,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,487.04 : 1,380,947.87 = 289,400.85 : x
  2. Step 2: Convert to fraction form
    920,487.04/1,380,947.87 = 289,400.85/x
  3. Step 3: Cross multiply
    920,487.04x = 1,380,947.87 × 289,400.85
  4. Step 4: Simplify right side
    920,487.04x = 399,647,488,107.19
  5. Step 5: Solve for x
    x = 399,647,488,107.19/920,487.04
  6. Step 6: Final answer
    x = 434,169.60

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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.