Home / 920,134.80-1,380,245.40-289,069.20

Finding the Fourth Proportional to 920,134.80, 1,380,245.40 and 289,069.20

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Solution

The fourth proportional to 920,134.80, 1,380,245.40 and 289,069.20 is: 433,617.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,134.80 : 1,380,245.40 = 289,069.20 : x
  2. Step 2: Convert to fraction form
    920,134.80/1,380,245.40 = 289,069.20/x
  3. Step 3: Cross multiply
    920,134.80x = 1,380,245.40 × 289,069.20
  4. Step 4: Simplify right side
    920,134.80x = 398,986,433,581.68
  5. Step 5: Solve for x
    x = 398,986,433,581.68/920,134.80
  6. Step 6: Final answer
    x = 433,617.37

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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.