Home / 920,079.91-1,380,175-288,993.72

Finding the Fourth Proportional to 920,079.91, 1,380,175 and 288,993.72

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Solution

The fourth proportional to 920,079.91, 1,380,175 and 288,993.72 is: 433,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,079.91 : 1,380,175 = 288,993.72 : x
  2. Step 2: Convert to fraction form
    920,079.91/1,380,175 = 288,993.72/x
  3. Step 3: Cross multiply
    920,079.91x = 1,380,175 × 288,993.72
  4. Step 4: Simplify right side
    920,079.91x = 398,861,907,501.00
  5. Step 5: Solve for x
    x = 398,861,907,501.00/920,079.91
  6. Step 6: Final answer
    x = 433,507.90

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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.